Dien
[化] 二亚乙基三胺; 二(2-氨基乙基)胺
🗣️ 情景例句
He is fun to be with.
与他相处很有趣。
Could you tell me where is the elevator?
你能不能告诉我电梯在哪里？
Let us suppose that a child suddenly crosses the road in front of you.
让我们假设一个小孩子突然在你前面穿过马路。