Ratchet arrangement
[化] 棘轮装置
🧩 词语组成解析
n. 棘轮, 棘爪\\n[机] 棘轮, 棘齿轮
🗣️ 情景例句
Yes ...
对呀……
He who would climb the ladder must begin at the bottom.
爬梯必须从底层开始。
The two boys carried the man to the school gate keeper's room.
两个男孩将那个人抬到了学校门卫的房间。