Diethylidene
[化] 二亚乙基; 2-丁烯
🗣️ 情景例句
What are the chances of my getting on the next flight?
我登上下一次航班的可能性有多大？
Mary, this is Joe's brother David.
玛丽，这是乔的兄弟戴维。
We like it very much. It's great!
我们非常喜欢，太好了！