Bivalent element
[醫(yī)] 二價元素
?? 詞語組成解析
a. 二價的\\n[化] 二價的
element
['?l?m?nt]
n. [化]元素;要素;原理;[電]電阻絲;
??? 情景例句
What's the problem?
什么事？
That is why we have asked you to come tonight.
這也就是我們今晚請你們來的原因。
To our dismay, we saw that there were snails everywhere:
讓人沮喪的是，我們發(fā)現(xiàn)到處都是蝸牛：