
好词典

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。
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。)
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。)
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。)