Jackscrew
n. 螺旋起重机\\n[医] 螺旋正牙器
🗣️ 情景例句
I've been studying all day, and I'm sick and tired of it.
我学了一天，现在感到厌倦。
Walls (or Pitchers) have ears.
隔墙有耳。
Please drop the other shoe!
请丢下另一只鞋吧！