Anyone who's traveled knows that sometimes there are airport taxes.

旅行的人往往知道，有时还有航空港税。

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For instance, sometimes there are good reasons to run a scheduled build.

例如，有些时候运行定时构建是合适的。

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The list goes on and on, and in most cases, there is no simple answer (and sometimes there is).

这个列表会非常长，在大多数情况下，并不能给出简单的回答（有时候也很简单）。

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Sometimes there is a strong focus on slavery but weak punishments, says I.L.O.official Roger Plant.

VOA: special.2009.06.08

Sometimes there were interesting little problems that emerged and one of those has to do with the use of chariots in warfare.

偶尔会有一些有趣的小问题出现,这往往和战争时使用的二轮战车相关

耶鲁公开课 - 古希腊历史简介课程节选

so you know, whether you can go to a talk, a lecture or sometimes there's concerts going on,

所以你知道，你可以去听演讲、讲座，或者有时候还有音乐会。

赛艇项目很流行 - SpeakingMax英语口语达人

Wombats generally live alone in their burrows, but sometimes there are more than one.

BBC: Protecting a wombat species that is as fast as Usain Bolt

Sometimes there is a little gap between what the American people think and what Congress thinks.

WHITEHOUSE: President Obama Makes a Statement on the Sequester

Sometimes there are a great many when a particular technology or business idea is in vogue.

FORBES: Israeli Tech Meets New York and Reveals a Familiar Pattern