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An operator on duty.

一个值班人员。

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To make an operator lazy, add a question-mark suffix.

要使操作符变得懒惰，请添加问号后缀。

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One story says it was first used during the early days of the telephone to tell an operator that a message had been received.

VOA: special.2010.02.28

The syntax is OK in the sense of, it is an operand, an operator, an operand, so syntactically it's OK.

这里的语法应该是好的，有个运算对象，一个运算符，另外一个运算对象，因此语法上是没错的。

麻省理工公开课 - 计算机科学及编程导论课程节选

And h with the carrot or the hat here, well, that carrot or hat tell us it must be an operator, and this is called the Hamiltonian operator.

而且带帽的H，好，这个帽告诉我们它肯定是一个算符，这个被称为哈密顿算符。

麻省理工公开课 - 化学原理课程节选

You can visit Yosemite National Park, where an operator rents Model Ts from June through October.

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The third is Globalstar, an operator that hesitantly began operations only at the end of 1999.

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According to Potter, what an operator ends up paying for a license is irrelevant to the market.

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