Hydroderivating
加氢衍生(作用)
🗣️ 情景例句
Who has torn these pages out of the book?
谁撕掉书上的这几页？
Would you hold the line, please, I will find out his number for you.
请你不要挂断，我替你找他的号码。
Good morning! What can I do for you?
早上好！我能为你做些什么？