Phenothiazinyl
吩噻嗪基
🗣️ 情景例句
All I do is study and take exams.
我要接受所有的学习和考试。
We pitied the family in their sudden unhappiness.
那家人遭受突然的不幸，我们深感同情。
Will you travel by sea or air?
你们乘船去，还是乘飞机去？