To grow 45 beds of green vegetables, we need many things like growing cups, LED growing lights, fans, a water pump and so on.

为了种植45苗床的绿色蔬菜，我们需要很多东西，比如种植杯、LED种植灯、风扇、水泵等。

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What is more, tunnels need power for lights and ventilation fans, and to run pumps when they flood, whereas Bridges require almost none.

除此之外，隧道需要电能来为隧道里的灯光与通风扇供电，还需要在隧道被淹的时候使用水泵，而桥梁则不需要这些。

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His classroom with 23 children now has lights, ceiling fans and a secure roof.

他的23位学生上课的教室现在有了电灯、吊式电扇和安全的屋顶。

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Suddenly fans stormed the barricade and camera lights were flashing.

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The blackout at the Mercedes-Benz SuperDome during Super Bowl XLVII was annoying for players and fans alike, but really helped Puppy Bowl IX, where cuteness was abundant and the lights never went out.

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Metal scaffolding supporting the stage lights fell onto a crowd of fans and workers as a storm swept through the Indianapolis fairgrounds on August 13, 2011, right before Sugarland was to perform.

CNN: STORY HIGHLIGHTS