Septavalency
(=septavalence)[化]七价
🗣️ 情景例句
Some people seem too think its for practicing grammar rules and learning lists of words.
一些人认为它是用来操练语法规则和学习一大堆单词。
He used to live in my neighborhood.
他曾与我是邻居。
However, my enthusiasm waned.
而这时我的热情却减退了。