Bivalent element
[医] 二价元素
🧩 词语组成解析
a. 二价的\\n[化] 二价的
element
['ɛləmənt]
n. [化]元素;要素;原理;[电]电阻丝;
🗣️ 情景例句
Life is full of ups and downs.
生活充满起伏。
The chance to enter the college came and he took it.
有一个上大学的机会，他抓住了这个机会。
It is only 380,000 kilometres away, and it has been visited by man already.
已经有人到过月球旅行了。