If water drips continuously from vent, second check is leaking.

如果水从排气口持续滴漏，则第二止回阀泄漏。

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To fix the problem in Listing 3, we need a second check of instance.

为处理清单 3 中的问题，我们需要对 instance 进行第二次检查。

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With this background, let's look at the function pthread_cond_timedwait, which you use for the second check.

有了这些背景知识，我们来看看pthread_cond _ timedwait函数，这个函数用于进行第二个检查。

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So that's the second thing I've just highlighted here, is that I now have the ability to check whether it does the right thing.

你知道的，一个虚数,但是返回虚数就没有什么价值了,那么这是我想要强调的第二件事情。

麻省理工公开课 - 计算机科学及编程导论课程节选

I actually need to check the second order condition.

实际上我们还需要验证二阶条件

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So how do I check the second order condition?

怎样验证二阶条件呢

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Romney is a millionaire, and he recently wrote his second big check to the campaign.

NPR: Sen. Obama Breaks Fundraising Record

Once I managed to get through passport control and the second security check, I found an uncomfortable, crowded waiting area.

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These companies argue that a second brand-check on cattle leaving their pens is an unnecessary expense.

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