derailleur
noun /dɪˈreɪljə(r)/
/dɪˈreɪlər/
(specialist)- a type of gear on a bicycle that works by lifting the chain from one gearwheel to another larger or smaller one
拨链器, 变速器 (自行车换挡装置)词源1930s: from French, from dérailler ‘derail’.
词汇 | derailleur |
释义 | derailleurnoun /dɪˈreɪljə(r)/ /dɪˈreɪlər/ (specialist)
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