把注意力完全集中在汇率上面，似乎是基于以下假设：它是盈余的主要根源，也是消除盈余的主要政策工具。
The singular focus on the exchange rate appears based on the assumption that it is the key cause of the surplus and the main policy instrument for removing it.
最有效的政策工具是汇率。
中国央行在声明中承认，汇率调整“对解决对外失衡”有一定作用，但只是一系列同等重要的政策工具中的一个。
In its statement, the PBoC acknowledged exchange rates could help "ease external imbalances", but only as part of a much broader set of equally important policy tools.
而外汇汇率作为国家政策工具，对出口贸易有极大的调节作用。
And the foreign exchange rate serves as a state policy tool exert a significant impact of the adjustment on the export trade.
而外汇汇率作为国家政策工具，对出口贸易有极大的调节作用。
And the foreign exchange rate serves as a state policy tool exert a significant impact of the adjustment on the export trade.
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