For example, the unary increment operator is named as operator + +.
举例来说，单目增量运算符命名为operator + +。
The escape operator may introduce an operator for example: back references, or a word operator.
转义符可以引入一个操作符，如反引用、词操作符。
Type the next mathematical operator(the multiplication sign, for example).
输入第二个数学运算符号。
Type the next mathematical operator(the multiplication sign, for example).
输入第二个数学运算符号。
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