| 释义 |
de·rail·leur
\də̇ˈrālə(r), dē-\ noun
(-s)
Etymology: French dérailleur, from dérailler to go off the track (from dé- de- + rail rail, from English) + -eur -or
: a mechanism for shifting gears on a bicycle that operates by moving the chain from one set of exposed gears to another
< 10-speed derailleur > |