| 单词 | traction |
| 释义 | traction n. 1. the act of drawing or pulling a thing over a surface, esp. a road or track (steam traction). 2. a a sustained pulling on a limb, muscle, etc., by means of pulleys, weights, etc. b contraction, e.g. of a muscle. 3. the grip of a tyre on a road, a wheel on a rail, etc. 4. US the public transport service. Phrases and idioms traction-engine a steam or diesel engine for drawing heavy loads on roads, fields, etc. traction-wheel the driving-wheel of a locomotive etc. Derivatives tractional adj. tractive adj. Etymology: F traction or med.L tractio f. L trahere tract- draw |
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