Dnn
[医][=1，5-dinitronaphthalene]1，5-二硝基萘
🗣️ 情景例句
First you must find out the clause of the quality problems and furnish sufficient evidence.
首先你的查查有关质量问题的条款，并提供足够的证据。
I know the boy whose father is a manager.
我知道那个男孩的父亲是经理。
The people in the shop are very friendly.
商店里的人很友好。