You usually don "t hear about these mini-programs, because they" re not the sort of thing that you either build up into commercial software, or spend the effort tidying up to release as open source.

你也许听都没听过这些迷你法式，因为它们既不是用于商业用途的软件，也不是那些专门用于清算或释放资本的开源软件。

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At informal get-togethers, for example, people often arrive as much as 30 minutes past the appointed time. But they usually don "t try that at work."

举例来说，在非正式的聚会中，人们往往会在约定时间过后30分钟才到，不过，他们上班通常就不会这样做。

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Smokers with this gene usually end up smoking many fewer cigarettes, because they don "t constantly need more nicotine."

有这种基因的吸烟者会吸更少的烟，因为他们不会不断地需要更多的尼古丁。

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"In fact you know two out of three of them don't even know they're infected because usually they feel perfectly healthy."

VOA: standard.2010.07.26

People don't usually know how many shares are outstanding in the company that they invest in.

人们通常不知道,他们所投资的公司到底发行了多少股票

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they usually don't get paid, you know, a whole lot of money.

他们一般不会有多少薪水。

一定要给小费 - SpeakingMax英语口语达人

"They usually don't hold up too well, or too long, " says Bert Ely, a banking analyst.

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In practice they usually don't, because states lack the legal authority to compel out-of-state retailers to collect the tax.

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They usually don't, but rather file suit hoping accused infringers will settle to avoid the high cost of fighting the case in court.

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