are the currency units to convert from and to respectively. These must be text, the official abbreviation for the currency (for example, &quot; EUR &quot; ). The rates (shown per euro) were set by the European Commission.
分别是换算前和换算后的货币单位，这些必须是货币的官方缩写文本（例如， &quot; EUR &quot; ）。所采用的汇率（以每欧元表示）是由欧洲委员会制定的。