久青草国产手机视频免费观看_毛片网站是多少_亚洲视频中文_一区二区高清在线

首頁英語詞典ratchetratchet英英釋意

ratchet

英 ['r?t??t] 美['r?t??t]
  • n. 棘輪；棘齒
  • vt. 安裝棘輪于；松脫

英英釋意

1. mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction