Valerolactam
戊内酰胺
🗣️ 情景例句
Are you carrying any items that need to be declared?
你没有携带需要申报的东西吗？
I must know your opinion.Do you agree with me?
我必须知道你的意见.你同意我吗？
We'll have to talk this over some more.
这件事我们得好好地再谈一谈。