Jackscrew
n. 螺旋起重机\\n[医] 螺旋正牙器
🗣️ 情景例句
I need some good photos for my advertising, Mr. Stewart.
我做广告需要一些好照片， Stewart先生。
You have a radio,don't you?
你有一台收音机，对吗？
You'd better buy a new pair.
你最好买双新的。