ratchet

'rætʃit

英文释义

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

中文翻译

n. 棘轮, 棘爪
[机] 棘轮, 棘齿轮

24,504
BNC 频率
21,513
使用频率

记忆技巧

ratchet 没有明显的词根词缀,但可以联想到其与“ratchet mechanism”(棘轮机制)相关,表示一种有限制性转动的装置。

例句

1. She used a ratchet to tighten the bolts on her bike.
她用棘轮扳手拧紧了自行车上的螺栓。
2. The mechanic explained how the ratchet works in the tool.
机械师解释了这个工具中的棘轮是如何工作的。
3. He felt a sense of progress as he heard the ratchet click with each turn.
每转动一次,他听到棘轮“咔嚓”作响,感到了一种进步的感觉。

学习工具