quick-change gears快: fast; quick; rapid; swift; s ...换: exchange; barter; trade齿轮: cogwheel; gear wheel wheel-l ...换齿轮: gear changing变换齿轮: change gear; change wheel; translating gear; transposing gear下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:快换齿轮，即可在微信中查询翻译
