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In sum, savings surpluses are a policy variable, not a given.
总而言之，储蓄盈馀是一个政策变数，而非既定事实。
youdao
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The money supply is a policy variable that is controlled by the Fed.
货币供给是由美联储控制的政策变量。
youdao
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The money supply is a policy variable that is controlled by the Fed.
货币供给是由美联储控制的政策变量。
youdao