Onb
[医][=o-nitrobiphenyl]邻-硝基联苯
🗣️ 情景例句
What do you do when he cries like that?
像他哭得这个样子该怎么办？
I picked up my papers.
我捡起了我的文件。
In the tree there is a bird.
树上有一只鸟。