Cdsc
[医][=Communicable Disease Surveillance Center]传染病监视中心
🗣️ 情景例句
Can I buy travelers checks here?
这儿能买旅行支票吗？
How do you do?
你好！
You have to learn when to ask for help and when to ask for information.
你得学会什么时候请求帮助，什么时候打听信息。