Servomachanism
[計] 伺服機構
??? 情景例句
Thanks. I'm on my way over.
謝謝， 我馬上就來。
The world is a ladder for some to go up and others to go down.
世界好似一把梯，有人上去有人下。
When he received a very rude reply from one of the workmen.
其中一個工人粗魯地回了幾句。