To hold high the banner of the advanced culture, we must first inherit the traditional culture. But it' s not to bring it simply, it' s to develop the useful and discard the useless.

高举先进文化的旗帜，首先是要继承传统文化，但这种继承绝不是全盘肯定、拿来，而是要既克服又保留，即扬弃。

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I think it's very useful. It may not be immediately apparent to people in Darfur, but in the end it is a contribution towards a solution to their problem."

VOA: standard.2009.10.23

It's an example of a very common tool that's going to be really useful to us, not just for doing search, but for doing a whole range of problems. That is, in essence, the template the describes a log style algorithm.

不仅仅是做搜索,还可以解决一整类问题,本质上，这个模板就描述了,对数形的算法,我们一会再回来。

麻省理工公开课 - 计算机科学及编程导论课程节选

And it's a useful pattern when you want to express that your feelings have been hurt or that you're not liking something,

当你想表达你在情感上受到了伤害或者不喜欢某件事的时候，这是个很有用的句型。

I get so upset 课堂 - SpeakingMax英语口语达人

To reveal the Congressman's insight, it's not especially useful to talk in billions of barrels and BTUs, none of which has much meaning to most of us.

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While the color offset is fine for viewing baby's play habits, it's not very useful when trying to identify the colors of a perpetrator's clothing to police.

ENGADGET: WiFi Baby 3G review, or: How we learned to stop worrying and love a surveillance camera

It's not yet a useful label.

NPR: Taking a Practical Approach to 'Green' Living