Percolumbic acid
[化] 过铌酸
🧩 词语组成解析
🗣️ 情景例句
She wants to be here for Grandpa.
她原希望在此等爷爷。
I have some left.
我剩下一些。
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。