Alkyle
[醫] 烴基化物
??? 情景例句
I've got three days off next week.
下星期我有三天假。
Did you sell it to him yourself?
你自己親自賣給他嗎？
Today it is common that women and girls make up in public.
今天，在公共場所看到婦女和姑娘化妝打扮是很普遍的事。