Ethydene
[医] 亚乙基, 乙叉
🗣️ 情景例句
She is in a meeting until night.
她开会要开到晚上。
If you don't aim high you will never hit high.
不立大志，难攀高峰。
I appreciate John's helping in time.
我感谢约翰的及时帮助。