It is a binary operator and can take at most two arguments.
它是一个二进制的操作符，最多只能接受两个参数。
What is the difference between the unary minus operator and the binary subtraction operator?
一元操作符负号和二元操作符减号的区别是什么？
What is the difference between the unary minus operator and the binary subtraction operator?
一元操作符负号和二元操作符减号的区别是什么？
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