I heard an apocryphal story about a Japanese firm that installed a turbine which needed electric power to keep it turning to save the face of its would-be-green owners.

我听说过一个杜撰的故事，一个日本公司安装了一台涡轮机，但却需要用电力来保持它运转来保护其“环保”的面子。

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I usually keep it light in the morning -- some fruit and a green juice is pretty standard.

在早餐时我吃得比较少——一些水果搭配一杯蔬菜汁是相当标准的配餐。

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And when the traffic light turns green, you convert it back rotational kinetic energy into linear kinetic energy and you keep going again.

绿灯亮起之时，将其转换回来，将旋转动能，转化为直线动能，你又再往前行进。

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Upstream, says Alvaro Navidad, who has come to look for rattlesnakes by the bridge, there's a place called Carlsbad, where they have a park, and the people there like to keep it green.

ECONOMIST: The Pecos river

Keep it Clean, Keep it Green.

FORBES: Why is Iceland Messing With the World's Best Fishing Regime?

Konchesky smacked the loose ball towards goal but Robert Green pounced on it to keep Fulham at bay.

BBC: Fulham 0-1 West Ham