Phosphonitrogen
磷氮肥
🗣️ 情景例句
After the marathon, most of the competitors looked all in.
跑完马拉松，大多数参加比赛的人显得疲劳不堪。
How about on Tuesday afternoon of next week? Is that okay with everyone?
下星期二下午怎样？各位没有意见吧？
Education is one of the key words of our time.
教育是我们这个时代的关键词之一。