Pennone
四甲基-2-戊酮
🗣️ 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 is not in now.
他现在不在这里。
Was it Su Lin?
是苏林吗？