Ncec
[医][=National Clearinghouse on Environmental Carcinogenesis]全国环境致癌作用情报交流所
🗣️ 情景例句
We really don't have to be overly concerned.
我们真的不需要过分担心。
I know the boy whose father is a painter.
我知道那个男孩的父亲是画家。
I have my hair cut every month.
我每个月都理发。