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 oneWord Origin1930s: from French, from dérailler ‘derail’.
单词 | derailleur |
释义 | derailleurnoun /dɪˈreɪljə(r)/ /dɪˈreɪlər/ (specialist)
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