Phosphonitrogen
磷氮肥
🗣️ 情景例句
Lincoln Center, home of the Metropolitan Opera,
林肯中心 ，大都会歌剧团，
We must listen carefully to the teacher.
我们必须注意听老师说的话。
I can't find it. There are just a few loose coins at the back of the drawer.
我也找不到。在抽屉底只有一些零散的钱币。