So a round wall of air pressed towards the middle of the base.

于是一堵圆形的空气墙就压向船底的中部。

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Depending upon the requirements of cold end temperature of tube wall of air preheaters, the method of cold air preheating and the criterion of selection for air heater are put forward.

根据空气预热器冷端壁温的要求，提出了冷风预热的方法以及暖风器选择的原则。

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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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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

All Archimede houses have an underfloor cavity that is always pressurized with warm air, and a series of tiny holes punched next to the outside wall encourages a slow diffusion of warmer air that prevents condensation and fungus development.

FORBES: Arctic Refuge On Stilts--Kangiqsujuaq, Quebec

Parts of inexplicable circles, drawn or incised on the light-colored wall behind him, give an air of happenstance to his position.

NEWYORKER: Art

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

FORBES: Magazine Article