You also have the power to ask them to leave the local park if necessary.

如果有必要的话，你也有权告诉他们离开球场。

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You can have your screener sort through the resumes to find those individuals most suited to the position, and call candidates to ask additional questions if necessary.

你可以让筛选人从这些简历中选出最适合经理职位的人选，然后有必要的话给候选人打电话询问其他的问题。

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Then go through each item on that list and ask if it is either necessary or directly helpful.

然后按照清单，逐项过一遍，看看它们是否有必要或有直接帮助。

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Mr. HALL: Look at what you're spending your money on, and ask yourself if it's necessary.

NPR: Financial Expert Examines Possibility of Recession

Website hosts should also ask visitors to provide information, which could be revealed if necessary.

FORBES: Lawsuits Against Web Trolls?Are On The Rise

So why, critics ask, did it take so long if it was really so necessary?

ECONOMIST: The Iraq war