Polyhalide
多卤化物
🗣️ 情景例句
Really?
真的？
This part of the country is very mountainous.
这个国家这一部分有很多山。
Many firms, for instance, have great difficulty in obtaining technical or scientific books from libraries
比如，很多公司向图书馆借阅科技书籍时感到很困难，