Ratchet

US /ˈrætʃɪt/

UK /'rætʃɪt/

A1 初級
n.名詞制輪裝置;棘齒
n.名詞棘輪扳手
He used a ratchet to tighten the bolts on the engine.
n.名詞棘輪
The clock uses a ratchet mechanism to control the release of the spring's energy.
v.t.及物動詞逐步增加
He ratcheted the strap tighter to secure the load.

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