Urr
[医]上游调控区
🗣️ 情景例句
I'm glad to help.
我很乐意帮忙。
I'm afraid you will be too tired
我怕你会太疲倦。
We can read of things that happened 5,000 years ago in the Near East,
我们从书籍中可读到5，000 年前近东发生的事情，