外汇汇率有三种形式，即：买进汇率，售出汇率和两者的平均值——中间汇率。
There are three types of foreign exchange price: buying rate, selling rate, the average of the two-medial rate.
在联系汇率制度结束的时间如此不确定的情况下，除买进到期时可能一钱不值的期权外，是否还有其他可以获利的办法？
With the timing of a change to the peg so uncertain, are there ways to wait for a payday other than buying options that may expire worthless?
由于大量美元通过净出口和外国投资的形式流入中国，中国央行必须按盯住的汇率买进这些美元。
As large amounts of dollars flow into China through net exports and foreign investment the Chinese central bank must buy up these dollars at the pegged exchange rate.
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