不要使用变量或货币数据类型作为参数或返回值。
Do not use variants or the currency data type as parameters or return values.
货币之间的转换由正在使用的汇率类型管理。
The conversion between currencies is governed by the type of exchange rate being used.
若要对包含一到四位小数的数字的字段执行很多计算，也应该使用“货币”数据类型。
You should also use a Currency data type if you plan to perform many calculations on a field that contains Numbers with one to four decimal places.
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