热门单词：“汇率波幅”用英文怎么说？

3月17日起，人民币兑美元汇率波幅由1%扩大至2%。首个交易日，人民币兑美元汇率中间价报6.1321，较上一个交易日升值25个基点。在即期市场，则出现人民币兑美元贬值的行情，但尚未跌破1%的幅度。

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The yuan eased against the US dollar in the first trading day after China doubled the currency’s daily trading band to 2 percent – a move intended to increase volatility and break one-way appreciation.

人民币兑美元汇率波幅由1%扩大至2%后的首个交易日出现人民币兑美元贬值的行情。央行扩大汇率波幅意在增强汇率波动弹性并打破单边升值局面。

人民币兑美元汇率波幅（daily trading band）指在央行设定的人民币兑美元汇率中间价（central parity rate）基础上，人民币兑美元在每个交易日内的汇率波动幅度。这是2007年以来央行第三次调整人民币汇率的波幅，2007年由1994年的0.3%扩 至0.5%，2012年扩至1%。

同时，外汇指定银行（foreign exchange-designated banks）为客户提供当日美元最高现汇卖出价与最低现汇买入价之差（the spread between selling and buying rates）不得超过当日汇率中间价的幅度由2%扩大至3%。

自2005年汇改（exchange rate reform）以来，人民币兑美元保持着单边升值（one-way appreciation）的走势，至今已累计升值超过30%。央行称，随着汇率市场化形成机制改革（reform of the market-based exchange rate formation mechanisms）的推进，未来人民币将与国际主要货币一样，有充分弹性的双向波动（bi-directional volatility）会成为常态。

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