These binary operators can be overloaded.

不能重载这些运算符。

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Use whitespace to help binary operators stand out from their operands.

使用空格将二元操作符与它的操作数分开。

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Unary operators have one parameter, and binary operators have two parameters.

一元运算子有一个参数，而二元运算子则有两个参数。

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