Ratchet
n. 棘轮, 棘爪\\n[机] 棘轮, 棘齿轮
✅ 同义词
📖 牛津释义
ratchet
n
1 device consisting of a toothed wheel or bar with a catch that fits between the teeth allowing movement in one direction only 棘轮机构.
2 (also `ratchet-wheel) wheel that forms part of this device 棘轮. =>illus 见插图.
🗣️ 情景例句
What did they say?
他们说什么?
This stain is really stubborn.
这污垢去不掉。
when a significant number of people are living permanently in space.
如果有相当数量的人永久性地住在太空，