Bismuthinite
辉铋矿
🗣️ 情景例句
Keith and I are through.
基思和我已经不再来往了。
Too much knowledge makes the head bald.
知识多，老得快。
This may be illustrated by comparing the position of a nation with that of a private business enterprise.
把国家的状况同私人企业的状况加以比较，就可以看清这个问题。