Polybromocarbon
多溴烃
🗣️ 情景例句
Yes. But could you wait one minute?
是的。不过， 你能等一下吗？
How do I say this?
怎么说？
Mr Brain has just heard Zheng Jie playing the piano in a concert.
布雷恩先生刚听了郑杰在音乐会上的钢琴演奏。