你們懂得多少(化學式)就請寫出來教我吧,用不用背化學式?I just know water: H2O
P...................Please!
收錄日期: 2021-04-15 19:41:51
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081226000051KK00446