Sometimes people you know might have the item you need, but not need it any longer.

有时，也许你认识的人中有人有你需要的东西并且已经不再需要它了。

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Sometimes you only need to know if a node contains a string or not (see Listing 15).

有时只需要知道节点是否包含某个字符串(参见清单15)。

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Sometimes although we know the language (not very much but enough) we can’t find the confidence to share it with foreign people.

有时候，我们虽然了解某一门外语（不够精通但够用），但是没有自信和外国人交流。

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As famed economic journalist Hu Shuli points out, new local officials sometimes do not know the extent of obligations left by their predecessors.

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But the truth is that sometimes employers may not always know about all that you have to offer.

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Sometimes you may not even know it for many months, years, or ever, with the average scheme taking eighteen months to discover.

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