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单词 freewheel
释义

WordReference Random House Unabridged Dictionary of American English © 2024
free•wheel  (frē′hwēl′, -wēl′),USA pronunciation n. 
  1. Automotivea device in the transmission of a motor vehicle that automatically disengages the drive shaft whenever it begins to turn more rapidly than the engine.
  2. Automotive, Sporta form of rear bicycle wheel that has a device freeing it from the driving mechanism, as when the pedals are stopped in coasting.

v.i. 
  1. Automotive(of a vehicle or its operator) to coast with the wheels disengaged from the driving mechanism.
  2. to move or function freely, independently, unconcernedly, or the like (often fol. by about, through, around, etc.):The two friends freewheeled around the country after graduation.
  • free + wheel 1895–1900

Collins Concise English Dictionary © HarperCollins Publishers::
freewheel /ˌfriːˈwiːl/ n
  1. a ratchet device in the rear hub of a bicycle wheel that permits the wheel to rotate freely while the pedals are stationary
 vb
  1. (intransitive) to coast in a vehicle or on a bicycle using the freewheel
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更新时间：2024/9/21 15:36:32