currency :n.货币，通货
devalue :v.贬值
downward :a.下降的，向下的
exchange rate :汇率
float :v.浮动
fluctuation :n.变动，波动
foreign exchange :外汇
foreign exchange loss :汇兑损失
in dollar terms :以美元换算
intervention :n.干预；介入
peg :n.连动；紧盯(某货币)
purchasing power parity :购买力平价
selling pressure :卖压
volatile :a.不稳定的；易波动