For example, ls -t will sort by modification time (newest to oldest) while ls -ls will produce a long listing sorted by size (largest to smallest).

例如，ls - t将按照修改时间排序(从最新到最旧)，而ls - ls将生成一个按大小排序的长列表(从最大到最小)。

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New T-Mobile customers can purchase an HTC HD7 for $49.99 with a two-year contract, while existing customers can upgrade for $99.99.

新的T-Mobile用户可以以49.99美元的购买一部HTC HD 7但需要签订两年合约，已在网的用户可以以99.99美元的价格升级自己的设备。

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If you "re looking for a job while you have one, you probably don" t want to use your boss or a current colleague as a reference.

如果你在有工作的时候求职的话，你可能不会想要你的上司或同事帮你写推荐信。

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And Thanksgiving also, in my early days when I was a child, the kids would all get to play, maybe we hadn't seen each other for a while.

VOA: special.2009.11.23

And of course even if in many cases, the engine continues to exist for a while, after the destruction of the car, certainly it doesn't follow the engine is immortal that continues to exist forever.

当然，即使在许多情况下，发动机在汽车毁坏后，能继续存在一段时间，但当然不能得出结论说,发动机是不朽的会永远存在下去。

耶鲁公开课 - 死亡课程节选

They don't sit in the box for a while and mull it over and then figure out how to do it.

它们并不会坐在迷笼里,思索问题，然后找到解决的方法。

耶鲁公开课 - 心理学导论课程节选

Wales didn't win a game and haven't for a while.

BBC: Jeremy Guscott's Six Nations Q&A

Then she got to check out and did something she hadn't done for a while.

NPR: As Food Prices Rise, There's No Dancing in the Aisles

Florida could change everything, even if we don't notice for a while.

CNN: Florida is a tie-breaker but no game-ender