He continued to move to and fro over the soft carpet.

他继续在柔软的地毯上来回走动。

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It is a disc or collar with an irregularly shaped edge, which operates in contact with a rod or lever, and causes it to oscillate, or to move to and fro.

它是一个不规则形的圆碟或圆环，和一个杆或棒连接运作，使它上下或往来摆动。

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The method and the device enable the materials to be dried to move to and fro from the drying roller to the sleeve, prolong the time of the material in the drying device and fully dry the material.

本发明使待烘干的物料经烘干滚筒至套筒往返移动，延长物料在烘干装置的时间，使物料得到充分干燥。

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The fluids exerted a drag, causing the samples to move to and fro at the same frequency with which the machine jiggled, but with a slight delay.

ECONOMIST: How tree frogs keep their grip