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在当前的政策与大环境下，币币交易后如何将手中的数字货币兑换成法币成为最大难题，而 USDT 的出现打破了这种僵局，并且给我们带来了一个全新的不同以往带有保值属性的数字货币。
In the current policy and general environment, the question of how to convert digital currencies into French after currency transactions is the greatest challenge, and the emergence of USDT has broken the deadlock and has given us a brand-new digital currency that is different from what it used to be.
一、数字资产和美元关系
i. Digital assets and dollar relations
USDT全称为 Tether USD,中文名称为泰达币。是由 Tether 公司(原名 Realcoin)发行的数字货币,其最大特性就是与美元是等值的，即1USDT=1 美元。用户可以通过 SWIFT 电汇美元至 Tether 功能四提供的银行账户，或通过交易所换取 USDT。赎回美元时，反向操作即可。这一特性使得 USDT 具有一个得天独厚的优势，那就是价格非常稳定。
USDT is fully known as Tether USD, with Thai currency. The largest feature of the digital currency issued by Tether (formerly Realcoin) is that it is equal to the dollar, i.e. 1 USDT = US$ 1. Users can transfer bank accounts provided by the US dollar through SWIFT wire transfers to Tether function IV, or exchange transactions for USDT. When the dollar is redeemed, the reverse action is sufficient. This feature gives USDT a unique advantage, which is very stable prices.
USDT 在技术方面，遵从比特币区块链的特点与功能，充币提币都是通过区块链完成的，匿名且不限量，交易确认等参数也与比特币一致。在价值上，USDT 与美元等值，可随时 1:1兑换。根据这两个特性可以将 USDT 简单理解为区块链上的美元。
At the technical level, USDT follows the characteristics and functions of the Bitcoin block chain, and the index notes are made through the block chain, anonymous and unlimited, and the parameters of transaction confirmation are the same as Bitcoin. At value, the USDT is the equivalent of the dollar at any one time:1. On the basis of these two characteristics, the USDT can be interpreted simply as the dollar on the block chain.
二、USDT作用
II. USDT plays a role
（一）结算货币
(i) Settlement currency
由于 USDT 价格非常稳定，兑换人民币、日元等货币时只会随美元的汇率而发生小幅度变动。 因此 USDT 在数字资产交易中可以充当美元的角色作为结算货币，在需要变现时只需要将 USDT 兑换为一国法定货币即可。
Because the USDT prices are very stable, currency conversions such as the renminbi and the yen can only vary slightly with the US dollar’s exchange rate. As a result, USDT can act as a United States dollar in digital asset transactions as a settlement currency, requiring only the conversion of USDT into a national legal currency when it is needed to realize it.
（二）资金避风港
(ii) Capital safe haven
以 BTC、ETH 为基准币的币兑币交易者通常会面临一个问题：如果 BTC 或 ETH 长时间放在交易账户中未兑换成法币则可能面临贬值风险。
A currency dealer with BTC or ETH as the base currency usually faces a problem: BTC or ETH may be exposed to the risk of devaluation if it is kept in the transaction account for a long period of time and is not converted into French currency.
举个例子：小明向 BTC 交易区币兑币账户中充值 1 个 BTC，当时市场价值为 10000 美元/个, 经过交易后小明账户中 BTC 增加至 1.1 个，后来由于长时间未交易、且 BTC 价格由 10000 美 元/个跌至 8800 美元/个，账户中的 1.1 个 BTC 最终变现为 1.1 ?X8800=8800 美元，这就让交易者在变现时承受了 BTC 贬值风险导致实际的现金收入缩水。
To give an example: 1 BTC was charged in BTC currency accounts at a market value of $10000 per account, BTC was increased to 1.1 in the trading account and subsequently reduced to $8,800 per account for a long period of untradable BTC prices from $10000 to $8,800 per account, and 1.1 BTC in the account was eventually converted to 1.1?X8,800 = $8,800, leaving traders exposed to the risk of BTC devaluation leading to a real contraction in cash income at the time of realization.
因此当 BTC、ETH 这类基准币价格面临大幅度下跌令币兑币交易投资者可能承受账户币值缩水风险时，可以将这些币种兑换为 USDT 存放在账户当中，等到这些币种价格重回上涨趋势时再进行币兑币交易。
Thus, when the price of such base currencies as BTC, ETH and others is facing a substantial fall in the price of the currency, it is possible for investors trading in the currency to be exposed to the risk of shrinking the value of the account currency, they can be held in the account as USDT, pending a return to the upward trend in the price of these currencies.
三、USDT 的优势
The advantages of iii, USDT
根据以上的介绍,我们不难发现 USDT 具有四大显著的独特优势：
On the basis of the above, it is not difficult to find that USDT has four distinct advantages:
1.规避风险：通过兑换成 USDT 来规避币价整体下跌的风险。
1. Avoidance of risk: avoiding the risk of an overall fall in currency prices by converting to USDT.
2.币价直观：更直观的看到每个币种对应的美元价格。
2. Intuitiveness of currency: a more intuitive view of the United States dollar prices corresponding to each currency.
3.法币兑换：USDT 可与美元进行1：1 兑换
3. French currency exchange: USDT can be converted to the United States dollar by 1:1
4.流通快：USDT 基于比特币区块链，稳定可靠。
4. Rapid circulation: USDT is based on the Bitcoin block chain and stable and reliable.
四、交易USDT？
iv, transactions USDT?
OKEx 平台已经上线了USDT交易区，您可以用USDT与DASH、ZEC、NEO、GAS、QTUM、IOTA、BTC、EOS、OMG 等二十多个币种进行交易，同时也可以将您的数字货币兑换成 USDT 来达到避险的作用。
The OKEx platform is already on-line in the USDT trading area. You can trade in more than 20 currencies, such as USDT and DASH, ZEC, NEO, GAS, QTUM, IOTA, BTC, EOS, OMG, etc., and can also convert your digital currency into a USDT for risk avoidance purposes.
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