成人小说亚洲一区二区三区,亚洲国产精品一区二区三区,国产精品成人精品久久久,久久综合一区二区三区,精品无码av一区二区,国产一级a毛一级a看免费视频,欧洲uv免费在线区一二区,亚洲国产欧美中日韩成人综合视频,国产熟女一区二区三区五月婷小说,亚洲一区波多野结衣在线

首頁(yè) 500強(qiáng) 活動(dòng) 榜單 商業(yè) 科技 領(lǐng)導(dǎo)力 專題 品牌中心
雜志訂閱

加密貨幣放在交易所是否安全?FTX一夜崩盤引發(fā)市場(chǎng)擔(dān)憂

Mia Taylor
2022-11-14

對(duì)于那些并未持續(xù)關(guān)注加密貨幣行業(yè)動(dòng)向的人士而言,無論從哪個(gè)角度來看,F(xiàn)TX的崩潰都是一件大事。

文本設(shè)置
小號(hào)
默認(rèn)
大號(hào)
Plus(0條)

FTX的崩盤引發(fā)市場(chǎng)擔(dān)憂,資金放在交易所是否安全遭到質(zhì)疑。圖片來源:PHOTO ILLUSTRATION BY FORTUNE; ORIGINAL PHOTOS BY GETTY IMAGES

全球第二大、同時(shí)也是增長(zhǎng)最快的加密貨幣交易所——FTX在被競(jìng)爭(zhēng)對(duì)手幣安(Binance)收購(gòu)的過程中一夜崩潰,消息傳來,整個(gè)加密貨幣世界都為之一驚。

FTX并非首個(gè)突然崩塌的大型加密貨幣機(jī)構(gòu),與之類似的還有Celsius和Voyager,二者均在今年春天申請(qǐng)破產(chǎn)保護(hù)。在退場(chǎng)過程中,試圖維持公司運(yùn)營(yíng)的管理層還把手伸進(jìn)了客戶賬戶。隨著FTX破產(chǎn)倒閉的全部影響逐漸清晰,市場(chǎng)開始擔(dān)憂,將通證(token)存放在交易所或經(jīng)紀(jì)商處是否足夠安全。

FTX崩盤的重大影響

對(duì)于那些并未持續(xù)關(guān)注加密貨幣行業(yè)動(dòng)向的人士而言,無論從哪個(gè)角度來看,F(xiàn)TX的崩潰都是一件大事。

貴為全球第二大加密貨幣交易所,F(xiàn)TX及其首席執(zhí)行官薩姆·班克曼-弗里德(綽號(hào)SBF)都是加密貨幣世界里冉冉升起的新星。就在今年8月,SBF還登上了《財(cái)富》雜志的封面,而按照喬希·弗雷澤的說法,甚至在此之前,SBF就已經(jīng)是備受尊敬的知名人士了。喬希·弗雷澤是Origin Protocol公司的聯(lián)合創(chuàng)始人,該公司推出了可以獲得收益的穩(wěn)定幣——Origin Dollar和NFT(非同質(zhì)化代幣)平臺(tái)——Origin Story。

“這件事情絕對(duì)會(huì)產(chǎn)生重大影響。”弗雷澤在一次接受采訪時(shí)說,“SBF在業(yè)內(nèi)非常高調(diào),贊助過體育場(chǎng)館,登上過雜志封面,還曾經(jīng)前往華盛頓與監(jiān)管機(jī)構(gòu)交涉,要求加大對(duì)加密貨幣的監(jiān)管力度,為了出名,他付出了很多努力,而且一直非常值得信賴。很多人都對(duì)他推崇備至,認(rèn)為他很靠譜。”

但FTX最終似乎并未做到“名副其實(shí)”,也未能恪守對(duì)客戶的承諾(比如不對(duì)外出借客戶入金、確??蛻舸嬖贔TX中的資產(chǎn)安全),弗雷澤表示。他還補(bǔ)充道:“很明顯,事實(shí)并不是FTX所承諾的那樣,資產(chǎn)存放在他們那里并不安全。因此,F(xiàn)TX崩盤事件絕對(duì)會(huì)產(chǎn)生重大影響,遺憾的是,很多無辜人士正在因?yàn)镕TX的不負(fù)責(zé)任而受到傷害”。

雖然FTX的崩塌會(huì)造成多大損失還有待觀察,但加密貨幣投資者依然能夠從這個(gè)案例中吸取一些教訓(xùn),其中最重要的是,將加密貨幣存放在交易所或經(jīng)紀(jì)商處(尤其是在市場(chǎng)動(dòng)蕩或衰退的時(shí)期)并非最安全的做法。

是否應(yīng)將加密貨幣存放在經(jīng)紀(jì)商和交易所處?

我們必須對(duì)一般性加密貨幣投資(據(jù)專家介紹,如果可以遵守一些重要原則,此類投資目前就依然安全)與將加密貨幣存放在經(jīng)紀(jì)商或交易所處的行為進(jìn)行區(qū)分。

經(jīng)紀(jì)商和交易所往往不夠透明,而且交給他們等同于允許他人保管你的資產(chǎn),并且相信他們能夠做到“履職盡責(zé)”。

1. 無鑰即無幣,幣鑰為一體

“無鑰即無幣,幣鑰為一體。”這是加密貨幣行業(yè)的一句名言,也是這個(gè)行業(yè)的一個(gè)黃金法則,其本質(zhì)上可以歸結(jié)為一個(gè)事實(shí),即:如果你把自己的加密貨幣交給其他人保管,那就相當(dāng)于你放棄了對(duì)這些加密貨幣的控制權(quán)。

Castle Funds的總裁兼首席信息官彼得·埃伯利稱:“把加密貨幣放在交易所(無論是中心化交易所還是去中心化交易所)就等同于放棄了控制權(quán),選擇相信他們的承諾,相信他們會(huì)保管好你的比特幣(Bitcoin)?!盋astle Funds是一家投資公司,自2017年以來一直在管理加密貨幣投資基金,對(duì)比特幣和其他數(shù)字貨幣進(jìn)行投資。

FTX事件表明,加密貨幣交易所透明不足的問題依然存在,這給管理不當(dāng)行為的出現(xiàn)留下了空間,在此背景之下,自然是小心為妙。“在股票市場(chǎng)上進(jìn)行交易時(shí),我們能夠放心地把股票交給托管人,因?yàn)樗麄兪艿降谋O(jiān)管更為嚴(yán)密,還會(huì)受到審計(jì)。而加密貨幣交易所則是‘暗箱操作’,無法了解其中情況。”埃伯利補(bǔ)充道,“就在今天,又有幾家交易所發(fā)布公告,表示自己將不得不提高透明度?!?/p>

弗雷澤也給出了類似的建議,他指出,無論市場(chǎng)整體情況如何,把加密貨幣存在交易所都不是明智之舉。

弗雷澤稱:“FDX并非首個(gè)崩盤的交易所。加密貨幣的全部意義就在于,我們不必再將信任寄托在他人身上。加密貨幣的出現(xiàn)就是為了解決這個(gè)問題,幫助我們擺脫那些不知道拿我們的錢做什么的不透明體系?!?/p>

2. 保管好自己的資產(chǎn)

正如前文所說,我們認(rèn)為與其將加密貨幣存放在交易所或經(jīng)紀(jì)商處,還不如自己保管,這樣要安全得多。所謂自己保管是指將其存在一個(gè)類似U盤的硬件錢包或者在線軟件錢包中。無論哪種方式,加密貨幣的控制權(quán)都依然在你手中,并且可以通過私鑰加密對(duì)其進(jìn)行保護(hù)。

弗雷澤解釋道:“私鑰加密使用的技術(shù)與確保我們能夠安全訪問網(wǎng)站、在網(wǎng)上輸入信用卡信息的技術(shù)相同。這些密鑰可以確保你的數(shù)字資產(chǎn)安全無虞”。

埃伯利表示,如果選擇硬件錢包(例如Ledger錢包),那么只有轉(zhuǎn)賬時(shí),你的加密貨幣才會(huì)出現(xiàn)在互聯(lián)網(wǎng)上。其余時(shí)間,你能夠把存有加密貨幣的硬件錢包放在保險(xiǎn)箱或保險(xiǎn)柜里。

3. 選擇有專業(yè)人員管理的賬戶進(jìn)行投資

對(duì)于高凈值加密貨幣投資者來說,通過有專業(yè)人員管理的賬戶進(jìn)行投資,也是一種保障資產(chǎn)安全的手段。這就是埃伯利的公司Castle Funds正在做的事情。該公司專注于與那些經(jīng)過資質(zhì)認(rèn)證的高凈值投資者合作,在處理加密貨幣投資時(shí),該公司會(huì)使用離線托管工具存放客戶資產(chǎn)。

埃伯利表示:“絕大多數(shù)時(shí)間,我們的通證都以離線方式保管,所以可以規(guī)避風(fēng)險(xiǎn)(比如交易所的風(fēng)險(xiǎn))。把通證存放在交易所的原因不是懶惰,就是不知道如何將加密貨幣存入自己的錢包?!?/p>

如果你才接觸加密貨幣投資,那么一定就要找個(gè)有經(jīng)驗(yàn)的人帶你了解如何將加密貨幣存入自己的錢包。

弗雷澤指出,就加密貨幣投資整體來說,目前仍然安全,這是底線。但交易所和經(jīng)紀(jì)商不夠透明的問題依然存在。

“不要把在這些交易所的問題與加密貨幣本身混為一談。”弗雷澤說,“一定不要把錢放在交易所,盡快提走。不過事實(shí)一直如此。如果你不放心自己保管,那么就可以考慮將其放在像Coinbase這樣受監(jiān)管的平臺(tái),Coinbase是一個(gè)透明平臺(tái),并且會(huì)公布自己的加密貨幣儲(chǔ)備,不會(huì)搞些見不得人的把戲,用戶能夠放心地把加密貨幣放在那里?!保ㄘ?cái)富中文網(wǎng))

編者注:本文包含的建議、意見或排名出自Fortune Recommends?編輯團(tuán)隊(duì)。相關(guān)內(nèi)容未經(jīng)任何合作伙伴或其他第三方審查,也未得到任何合作伙伴或其他第三方認(rèn)可。

譯者:梁宇

審校:夏林

全球第二大、同時(shí)也是增長(zhǎng)最快的加密貨幣交易所——FTX在被競(jìng)爭(zhēng)對(duì)手幣安(Binance)收購(gòu)的過程中一夜崩潰,消息傳來,整個(gè)加密貨幣世界都為之一驚。

FTX并非首個(gè)突然崩塌的大型加密貨幣機(jī)構(gòu),與之類似的還有Celsius和Voyager,二者均在今年春天申請(qǐng)破產(chǎn)保護(hù)。在退場(chǎng)過程中,試圖維持公司運(yùn)營(yíng)的管理層還把手伸進(jìn)了客戶賬戶。隨著FTX破產(chǎn)倒閉的全部影響逐漸清晰,市場(chǎng)開始擔(dān)憂,將通證(token)存放在交易所或經(jīng)紀(jì)商處是否足夠安全。

FTX崩盤的重大影響

對(duì)于那些并未持續(xù)關(guān)注加密貨幣行業(yè)動(dòng)向的人士而言,無論從哪個(gè)角度來看,F(xiàn)TX的崩潰都是一件大事。

貴為全球第二大加密貨幣交易所,F(xiàn)TX及其首席執(zhí)行官薩姆·班克曼-弗里德(綽號(hào)SBF)都是加密貨幣世界里冉冉升起的新星。就在今年8月,SBF還登上了《財(cái)富》雜志的封面,而按照喬希·弗雷澤的說法,甚至在此之前,SBF就已經(jīng)是備受尊敬的知名人士了。喬希·弗雷澤是Origin Protocol公司的聯(lián)合創(chuàng)始人,該公司推出了可以獲得收益的穩(wěn)定幣——Origin Dollar和NFT(非同質(zhì)化代幣)平臺(tái)——Origin Story。

“這件事情絕對(duì)會(huì)產(chǎn)生重大影響?!备ダ诐稍谝淮谓邮懿稍L時(shí)說,“SBF在業(yè)內(nèi)非常高調(diào),贊助過體育場(chǎng)館,登上過雜志封面,還曾經(jīng)前往華盛頓與監(jiān)管機(jī)構(gòu)交涉,要求加大對(duì)加密貨幣的監(jiān)管力度,為了出名,他付出了很多努力,而且一直非常值得信賴。很多人都對(duì)他推崇備至,認(rèn)為他很靠譜?!?/p>

但FTX最終似乎并未做到“名副其實(shí)”,也未能恪守對(duì)客戶的承諾(比如不對(duì)外出借客戶入金、確??蛻舸嬖贔TX中的資產(chǎn)安全),弗雷澤表示。他還補(bǔ)充道:“很明顯,事實(shí)并不是FTX所承諾的那樣,資產(chǎn)存放在他們那里并不安全。因此,F(xiàn)TX崩盤事件絕對(duì)會(huì)產(chǎn)生重大影響,遺憾的是,很多無辜人士正在因?yàn)镕TX的不負(fù)責(zé)任而受到傷害”。

雖然FTX的崩塌會(huì)造成多大損失還有待觀察,但加密貨幣投資者依然能夠從這個(gè)案例中吸取一些教訓(xùn),其中最重要的是,將加密貨幣存放在交易所或經(jīng)紀(jì)商處(尤其是在市場(chǎng)動(dòng)蕩或衰退的時(shí)期)并非最安全的做法。

是否應(yīng)將加密貨幣存放在經(jīng)紀(jì)商和交易所處?

我們必須對(duì)一般性加密貨幣投資(據(jù)專家介紹,如果可以遵守一些重要原則,此類投資目前就依然安全)與將加密貨幣存放在經(jīng)紀(jì)商或交易所處的行為進(jìn)行區(qū)分。

經(jīng)紀(jì)商和交易所往往不夠透明,而且交給他們等同于允許他人保管你的資產(chǎn),并且相信他們能夠做到“履職盡責(zé)”。

1. 無鑰即無幣,幣鑰為一體

“無鑰即無幣,幣鑰為一體?!边@是加密貨幣行業(yè)的一句名言,也是這個(gè)行業(yè)的一個(gè)黃金法則,其本質(zhì)上可以歸結(jié)為一個(gè)事實(shí),即:如果你把自己的加密貨幣交給其他人保管,那就相當(dāng)于你放棄了對(duì)這些加密貨幣的控制權(quán)。

Castle Funds的總裁兼首席信息官彼得·埃伯利稱:“把加密貨幣放在交易所(無論是中心化交易所還是去中心化交易所)就等同于放棄了控制權(quán),選擇相信他們的承諾,相信他們會(huì)保管好你的比特幣(Bitcoin)。”Castle Funds是一家投資公司,自2017年以來一直在管理加密貨幣投資基金,對(duì)比特幣和其他數(shù)字貨幣進(jìn)行投資。

FTX事件表明,加密貨幣交易所透明不足的問題依然存在,這給管理不當(dāng)行為的出現(xiàn)留下了空間,在此背景之下,自然是小心為妙。“在股票市場(chǎng)上進(jìn)行交易時(shí),我們能夠放心地把股票交給托管人,因?yàn)樗麄兪艿降谋O(jiān)管更為嚴(yán)密,還會(huì)受到審計(jì)。而加密貨幣交易所則是‘暗箱操作’,無法了解其中情況?!卑2a(bǔ)充道,“就在今天,又有幾家交易所發(fā)布公告,表示自己將不得不提高透明度。”

弗雷澤也給出了類似的建議,他指出,無論市場(chǎng)整體情況如何,把加密貨幣存在交易所都不是明智之舉。

弗雷澤稱:“FDX并非首個(gè)崩盤的交易所。加密貨幣的全部意義就在于,我們不必再將信任寄托在他人身上。加密貨幣的出現(xiàn)就是為了解決這個(gè)問題,幫助我們擺脫那些不知道拿我們的錢做什么的不透明體系?!?/p>

2. 保管好自己的資產(chǎn)

正如前文所說,我們認(rèn)為與其將加密貨幣存放在交易所或經(jīng)紀(jì)商處,還不如自己保管,這樣要安全得多。所謂自己保管是指將其存在一個(gè)類似U盤的硬件錢包或者在線軟件錢包中。無論哪種方式,加密貨幣的控制權(quán)都依然在你手中,并且可以通過私鑰加密對(duì)其進(jìn)行保護(hù)。

弗雷澤解釋道:“私鑰加密使用的技術(shù)與確保我們能夠安全訪問網(wǎng)站、在網(wǎng)上輸入信用卡信息的技術(shù)相同。這些密鑰可以確保你的數(shù)字資產(chǎn)安全無虞”。

埃伯利表示,如果選擇硬件錢包(例如Ledger錢包),那么只有轉(zhuǎn)賬時(shí),你的加密貨幣才會(huì)出現(xiàn)在互聯(lián)網(wǎng)上。其余時(shí)間,你能夠把存有加密貨幣的硬件錢包放在保險(xiǎn)箱或保險(xiǎn)柜里。

3. 選擇有專業(yè)人員管理的賬戶進(jìn)行投資

對(duì)于高凈值加密貨幣投資者來說,通過有專業(yè)人員管理的賬戶進(jìn)行投資,也是一種保障資產(chǎn)安全的手段。這就是埃伯利的公司Castle Funds正在做的事情。該公司專注于與那些經(jīng)過資質(zhì)認(rèn)證的高凈值投資者合作,在處理加密貨幣投資時(shí),該公司會(huì)使用離線托管工具存放客戶資產(chǎn)。

埃伯利表示:“絕大多數(shù)時(shí)間,我們的通證都以離線方式保管,所以可以規(guī)避風(fēng)險(xiǎn)(比如交易所的風(fēng)險(xiǎn))。把通證存放在交易所的原因不是懶惰,就是不知道如何將加密貨幣存入自己的錢包?!?/p>

如果你才接觸加密貨幣投資,那么一定就要找個(gè)有經(jīng)驗(yàn)的人帶你了解如何將加密貨幣存入自己的錢包。

弗雷澤指出,就加密貨幣投資整體來說,目前仍然安全,這是底線。但交易所和經(jīng)紀(jì)商不夠透明的問題依然存在。

“不要把在這些交易所的問題與加密貨幣本身混為一談。”弗雷澤說,“一定不要把錢放在交易所,盡快提走。不過事實(shí)一直如此。如果你不放心自己保管,那么就可以考慮將其放在像Coinbase這樣受監(jiān)管的平臺(tái),Coinbase是一個(gè)透明平臺(tái),并且會(huì)公布自己的加密貨幣儲(chǔ)備,不會(huì)搞些見不得人的把戲,用戶能夠放心地把加密貨幣放在那里。”(財(cái)富中文網(wǎng))

編者注:本文包含的建議、意見或排名出自Fortune Recommends?編輯團(tuán)隊(duì)。相關(guān)內(nèi)容未經(jīng)任何合作伙伴或其他第三方審查,也未得到任何合作伙伴或其他第三方認(rèn)可。

譯者:梁宇

審校:夏林

The crypto world has been reeling today amid news that FTX, the second-largest and fastest-growing crypto exchange, essentially collapsed overnight amid a takeover by rival Binance.

This is not the first time that a large crypto firm has folded abruptly. Celsius and Voyager provide two similar examples—both went under this past spring. And on their way out, dipped into customer accounts to try and stay afloat. As the full ramifications of the FTX insolvency and collapse become clear, it raises questions about just how safe it is to keep tokens in exchanges or with brokerages.

The significance the FTX collapse

For those who don’t follow every twist and turn of the crypto industry, the collapse of FTX is a big deal by any measure.

As the second-largest crypto exchange, FTX and its CEO Sam Bankman-Fried, who goes by SBF, were rising stars in the crypto world. Just this past August, SBF appeared on the cover of Fortune, and even prior to that he was a very public and well-respected figure, says Josh Fraser, co-founder of Origin Protocol, a company that created Origin Dollar, a yield-bearing stable coin, and Origin Story, an NFT platform.

“This is absolutely massive,” Fraser said during an interview. “SBF has been very visible in the industry—from sponsoring stadiums and appearing on the cover of magazines to being in Washington D.C. talking to regulators and calling for more regulations of crypto—he’s been really working to make a name for himself and has been a very trusted person. A lot of people respected him and viewed him as a good actor.”

In the end however, it seems FTX was not all that it appeared and had not been keeping its promises to its customers, says Fraser. This includes promises about not lending out customer deposits and that customer assets were safe with FTX. “Clearly that was not the case. Assets were not safe. So this is absolutely huge and unfortunately a lot of innocent people are getting hurt by this,” Fraser added.

While it remains to be seen just how much damage will be done by FTX’s implosion, there are some lessons crypto investors can learn from this case. Chief among them—keeping coins in crypto exchanges or brokerages, particularly amid volatility or downturns, is not the safest move.

Should you keep crypto in brokerages and exchanges?

It’s important to make a distinction between investing in crypto generally—which experts say still remains safe when you follow a few key best practices—and keeping your coins in brokerages or exchanges such as FTX.

There is often a lack of transparency with brokerages and exchanges that can be problematic, you’re also allowing someone else to hold your assets, and trusting that they will do so responsibly.

1. Not your keys, not your coins

There’s a well-known expression or golden rule in the crypto industry—“Not your keys, not your coins.” And it essentially boils down to the fact that when you turn your coins over to someone else to hold and keep secure, you’re abdicating control over them.

“When you leave your crypto on an exchange, whether it’s centralized or decentralized, you have given up control. You’re taking their promise that your bitcoins are actually there,” says Peter Eberle, president and chief information officer for Castle Funds, an investment firm that has been managing funds invested in Bitcoin and other digital currencies since 2017.

This is concerning because as the FTX case makes clear, there continues to be a lack of transparency among exchanges, which leaves opportunity for mismanagement. “On the stock market, you leave your stocks with a custodian, and it’s safe because they are more regulated, and they are audited. These exchanges work in this dark hole where you can’t see into it,” continues Eberle. “Just today there were several announcements about how they’re going to have to provide more transparency.”

Fraser offers similar advice, pointing out that keeping coins in an exchange is almost always a bad idea, no matter what’s going on with the broader market.

“FDX is not the first exchange to fail,” says Fraser. “The whole point of crypto is that you don’t have to trust other people anymore. Crypto was designed to save us from this exact problem—these opaque systems where you don’t know what is being done with your money.”

2. Custody your own assets

Related to the points just made, rather than keeping coins on exchanges or with brokerages, it’s far safer to custody your own assets. This means keeping them in a physical hardware wallet similar to a USB drive or alternatively, in an online software wallet. In both cases, you are the one who maintains control over the coins and access to them is protected through private key cryptography.

“Private key cryptography is the same technology that allows us to visit a website and enter our credit card information online safely,” explains Fraser. “It’s the same technology as that. These keys are what secure your assets, your digital assets.”

When you opt for a hardware wallet, such as a Ledger device, only when you are moving crypto currency around do you put your coins on the internet. The rest of the time, they can be kept in your hardware wallet in a safe, or safety deposit box, says Eberle.

3. Invest in professionally managed accounts

For high net worth crypto investors, yet another measure of safety may be achieved by investing through professionally-managed accounts. This is what Eberle’s own firm, Castle Funds, does. He specializes in working with accredited, high-net-worth investors and when handling crypto investments the firm uses offline custody tools for client’s assets.

“The vast majority of the time, our tokens are in custody offline, so it does away with the risk, such as an exchange risk,” says Eberle. “The only reason to leave tokens on an exchange is laziness, or lack of understanding in terms of how to put crypto in your wallet.”

If you are new to crypto investing, it’s important to have someone who is experienced, guide you through the process of putting crypto in your own wallet.

Bottom line, says Fraser, is that crypto investing as a whole remains safe. But exchanges and brokerages continue to lack transparency.

“Don’t confuse what’s happening on these exchanges with crypto itself,” says Fraser. “Absolutely do not leave money on exchanges. Pull it off. But that’s true all the time. For people who are too scared to handle self custody, consider regulated platforms like Coinbase, which is transparent and publishes its reserves. Using platforms like Coinbase, people can see there’s no funny business and that their money is safe.”

EDITORIAL DISCLOSURE: The advice, opinions, or rankings contained in this article are solely those of the Fortune Recommends? editorial team. This content has not been reviewed or endorsed by any of our affiliate partners or other third parties.

財(cái)富中文網(wǎng)所刊載內(nèi)容之知識(shí)產(chǎn)權(quán)為財(cái)富媒體知識(shí)產(chǎn)權(quán)有限公司及/或相關(guān)權(quán)利人專屬所有或持有。未經(jīng)許可,禁止進(jìn)行轉(zhuǎn)載、摘編、復(fù)制及建立鏡像等任何使用。
0條Plus
精彩評(píng)論
評(píng)論

撰寫或查看更多評(píng)論

請(qǐng)打開財(cái)富Plus APP

前往打開
熱讀文章
a级国产乱理伦片在线| 国产丝袜美女一区二区三区| 精品久久久久久无码| 国产刺激男女视频在线| 国产精品伊人国产国产精品人在线视| 国产高潮呻吟久久| 无码人妻丰满熟妇A片护士| 与亲女洗澡时伦了毛片| 日本国产一区二区三区在线观看| 国产福利一区二区三区在线视频| 性欧美暴力猛交在线播放| 国产精品嫩草影院久久| 99久久久无码国产精品性| 国产一区二区无码免费播放| 国产精品一区二区视色| 在线视频一区二区免费| a级毛片免费高清毛片视频| 最新欧美一区二区| 日韩成人一区二区三区在线观看| 在线观看激情AV更新| 国产成人AAAAA级毛片| 国产亚洲制服免视频| 久久久久无码国产精品一区| 91无码精品久久久久一区二区| 国产乱子伦精品无码专区| 性派对交换俱乐部小说| 久久精品国产99国产精| 国产在线观看无码免费视频| 扒开双腿疯狂进出爽爽爽视频| 国产69精品久久久久99尤物| 巨胸美乳中文在线观看| 亚洲天堂国产成人在线黄色| 亚洲熟女伦子伦av一区二区三区| 国产成人精品月日本亚洲语音| 国产精品国产三级国产潘金莲| 亚洲AV无码国产丝袜在线观看| 在线播放免费人成毛片乱| 亚洲精品乱码久久久久久蜜桃不卡| 国产成人综合亚洲av第一页| 免费精品国产一区二区三区| 日韩人妻不卡一区二区三区|