One source of error is refraction, the bending of light beams as they pass through air layers of different temperature and pressure.

误差的一个来源是折射，即光束通过不同温度和压力的空气层时发生的弯曲现象。

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In the ENTR 'acte there was a current of chill air in Ellen's box, the door was opened, and Anatole walked in, bending and trying not to brush against any one.

幕间休息时，海伦的包厢里有一阵袭人的寒气，门打开了，阿纳托利弯下身子，尽力不挂着别人，走了进来。

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Instrument air tubing shall be 316 stainless steel. The tubing shall be seamless and suitable for bending. The fittings shall be suitable for the selected tubing.

仪表空气管线应该使用316不锈钢管。管线应为无缝管并且易于弯曲。接头应适用于所选的管线。

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Why as the motor bike soared into the air, hurtled down, crashed into the tarmac and careered onwards, dragging with it a tumbly, bending human figure whose bones were almost audibly snapping would any sane man want to do such a thing?

ECONOMIST: Evel Knievel