Oxybromide
溴氧化物
🗣️ 情景例句
I have worked hard at my major subject.
我对主修课特别用功。
Please make an appointment with my secretary.
请跟我秘书定个见面时间。
Still, I'm glad the bell is working again.'
不过，钟又能报时了，我还是很高兴的。”