8 min An operator notices that the valves for the backup pumps in the secondary loop are off. He opens the valves. The secondary side now operating normally.

8分钟一个操作员注意到二次回路备用水泵的阀门是关的，于是打开了阀门。二次回路现在运作正常。

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The researchers posit that although the extra rigidity of the tendon makes up for the lost muscle function, it causes pain once the pumps come off and the tendons have to stretch again.

研究人员推定，虽然肌腱额外的刚性可补偿失去的肌肉功能，但是只要不穿高跟鞋，肌腱就被迫再次伸展开，导致疼痛。

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During off-peak times, electricity runs a compressor which pumps the air down into the cavern.

在非高峰期，电力驱动一台压缩机，将空气泵入到洞穴中。

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Lowe's, a DIY chain, saw water pumps and generators fly off its shelves in the days after the flood.

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Public transport stayed off the roads and petrol pumps and filling stations were also closed.

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It is easy for parking software to control because it involves switching electric motors on and off, rather than operating mechanical pumps.

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