ratchet

🇺🇸 /ˈrætʃɪt/ 🇬🇧 /ˈrætʃɪt/
词频
难度
标签 TOP20000
noun
R

A device that allows movement in one direction but not the other, often used in machinery.

The ratchet mechanism in the wrench ensures that the bolt tightens securely.

扳手里的棘轮机制确保螺栓能安全地拧紧。

translation

n. 棘轮

词形变化

Plural ratchets