They simply sense changes in their environment, as for example when the mound's wall has been damaged, altering the circulation of air.

它们只是简单地感觉到它们所处环境的变化，例如，当土堆的壁被破坏时，会改变空气的循环。

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There the air absorbs more moisture, which then condenses on a metal wall cooled by seawater, and thus distilled water for irrigating the plants collects.

在那里，空气吸收了更多的水分，然后将水分凝结在由海水冷却的金属壁上，从而收集用于灌溉植物的蒸馏水。

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This heated air, drawn down from the roof, then mixes with the greenhouse air as it reaches a second sea-water-moistened cardboard wall at the back of the greenhouse.

从屋顶吸出的这种热空气，在到达温室后部第二个被海水润湿的纸板壁时，便与温室空气混合。

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World leaders and dignitaries have gathered to join in the 20th anniversary celebrations, which include open air concerts, fireworks,and the symbolic collapse of a wall of brightly painted oversize dominoes.

VOA: standard.2009.11.09

Maybe a primal thrill at getting something out of thin air explains Wall Street's infatuation with cash payouts.

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Kumaritashvili's sled struck the inside of the track's last turn during his sixth and final training run, sending his body into the air and over a concrete wall.

BBC: Olympic luger Nodar Kumaritashvili dies after crash

The athlete's sled struck the inside of the track's last turn during his sixth and final training run, sending his body into the air and over a concrete wall.

BBC: Olympic luger Kumaritashvili buried in Georgia