Jackscrew
n. 螺旋起重机\\n[医] 螺旋正牙器
🗣️ 情景例句
And what happened?
发生什么事呢？
This problem is hard to solve.
要解决这个问题不简单。
Oh! She's falling off her bike. I hope she didn't hurt herself.
噢！她正从自己的自行车上跌落下来。我希望她没有摔伤。