unary operator

• 单项算符,一元运算符,一元算符,一目运算符

unary operator的用法和样例：

例句

1. A unary operator such as Minus is left as an exercise.
   像负号这样的一元运算符就留给读者练习。
2. The following table displays valid unary operators and describes the expected result.
   下表显示了有效的一元运算符并说明了预期的结果。