好词典

ratchet

UK //ˈrætʃ.ɪt//US //ˈrætʃ.ɪt//

词源

源自法语 'rochet'(齿轮),可能来自古法语 'rocher'(转动),最终源自日耳曼语源。

noun

❶ 一种机械装置,通常由齿轮和棘爪组成,只允许单向运动,防止倒转。常用于工具或机械设备中。

“The ratchet mechanism prevents the wheel from turning backward.”

(棘轮机构防止轮子向后转动。)

“He used a ratchet to tighten the bolts.”

(他用棘轮扳手拧紧了螺栓。)

同义词:pawl, click, detent

verb

❶ 逐步增加或升级某事物,通常指负面情况或紧张局势的加剧。

“The conflict continued to ratchet up tensions in the region.”

(冲突继续加剧了该地区的紧张局势。)

“The company ratcheted up production to meet demand.”

(公司提高了产量以满足需求。)

同义词:increase, escalate, intensify

常见短语

ratchet up — 逐步增加或提高某事物,通常指压力、紧张或强度。

“The government ratcheted up security measures after the attack.”

(袭击发生后,政府加强了安全措施。)

ratchet down — 逐步减少或降低某事物,通常指紧张局势或强度。

“Both sides agreed to ratchet down the conflict.”

(双方同意缓和冲突。)