The ways have been found to take some useful things out of the waste materials and use them again. This is called recycling.

一些从废物中提取有用东西加以重新利用的方法找到了，这被称作回收利用。

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Because only take the time to do some useful things, many a mickle makes a muckle, and in order to accomplish something, you don't like sedate tramp regret again.

因为只有抓紧时间做一些有益的事，积少成多，才能有所成就，才不会像稳重的流浪汉那样再次追悔莫及。

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With smart phones, you can take a photo and video, play games, locate your position and do countless of other useful things.

FORBES: Body temperature.