Actiyator
[电] 调速控制器
🗣️ 情景例句
We are four in all.
我们家共有四口人。
I'm thinking about a visit to Paris.
我在考虑去巴黎旅游。
The city was equipped with a drainage system, for a great many clay pipes were found beneath the narrow streets.
城里甚至还敷设了排水系统，因为在狭窄的街道底下发现了许许多多陶土制作的排水管道。