Oxamide
草酰胺, 乙二酰二胺
🗣️ 情景例句
Those were great days and we were very happy.
那些日子美好极了，我们过得很幸福。
I don't know the answer, but let me ask Mr. Chen to comment on that.
我不知道答案，让我问一下陈先生看他有什么看法。
That's all right.
没关系。