Why do chemists call helium, curium and barium the medical elements?
Because if you can't helium or curium, you barium!
Q1:譯中文
Q2:是在說甚麼(用中文)
收錄日期: 2021-04-13 19:03:50
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20121020000051KK00001