提高外币现钞的银行买入价，并允许不同地区在规定范围内适当浮动。
To increase the bank purchase prices of foreign cashes, and allow different places to float within the prescribed scope.
银行卖出外汇的汇率（卖出价）高于买入外汇的汇率（买入价）。
The rates at which the banks sell foreign exchange (selling rates) are higher than the rates at which they buy (buying rates).
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