But though his grey face was all wizened up with trouble and wet witli tears, he never so much as once looked behind him, lest his sons should cry after him, or he turn back.

虽然希姆灰色的脸布满愁云，淌满泪水，他却始终没有回头看上一眼，以免儿子们在身后哭泣，或者自己会忍不住回去。

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Every housewife that but once in her life hung up clothes to dry, knows full well that air absorbs moisture when passing over, or through, wet objects.

任何一位家庭主妇，只要只要有过晾衣服的经验，就一定知道流动的空气能够带走潮湿衣物里的水分。如果她想快一点晾干衣服，那她最好是把衣服晾在更加通风的地方。

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Dr Karp's patch mimics this action using minute needles made of plastic with tips that are rigid when dry but swell once they have pierced wet tissue.

BBC: 'Bed-of-needles' super-grip plaster for surgical wounds

But the question of when and whether this part of Mars was once wet is likely to be kicked around at scientific meetings for years.

NPR: Mars Rover Marks Second Anniversary of Landing