Polyfon
木质磺酸钠盐
🗣️ 情景例句
The policemen could not cope with the crowds.
警察不能对付群众。
He can't come and he sends his apologies.
他为他的不能前来致歉。
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。