Olefination
烯化作用, 成烯作用
🗣️ 情景例句
as well as the younger people of Riverdale.
和年轻人服务。
Who is this?I don't recognize your voice.
你是谁?我不认出你的声音。
I could say nothing but that I was sorry.
我除了说“对不起”之外，什么也说不出来。