Ethydene
[医] 亚乙基, 乙叉
🗣️ 情景例句
Excuse me.
请原谅。
I must concentrate on my new task.
我必须专注于我的新工作。
He told him he had better return it or he would call the police.
告诉他最好把羊交还，否则就去叫警察。