You have a block here and then you have something above there floating in mid air.

你在这里放一个木块，让某物漂浮在木块之上。

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Unplug the phone and use a white-noise machine, or a fan or an air conditioner, to block out background noise.

把电话线拔掉，使用一个能产生白噪声的机器，或是打开电风扇、空调，以阻断背景噪音。

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Fans and air filters add to the distractions, so some astronauts wear ear plugs to block out the constant hum.

风扇和空气过滤器是另一个干扰源，因此有的宇航员会戴耳塞，挡住这些持续不断的嗡嗡声。

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The plastic can block air passages. The trash can also make the animal feel full, lessening its desire to eat or drink.

VOA: special.2009.09.22

You have a block here and then you have something above there floating in mid air.

你在这里放一个木块,让某物漂浮在木块之上

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In a warm front, a mass of relatively warm air pushes against a block of cooler air and is forced to flow up over it.

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However, Italian Prime Minister Romano Prodi said last week that the Italian government would not block any move by Air France-KLM as long as it maintained the bulk of Alitalia's flights.

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It was only later, when upon the white flash of another high sea hurling itself amidships, Jukes had a vision of two pairs of davits leaping black and empty out of the solid blackness, with one overhauled fall flying and an iron-bound block capering in the air, that he became aware of what had happened within about three yards of his back.

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