Olefine
[化] 烯烃; 链烯烃
🗣️ 情景例句
He's on the phone.
他在电话上。
I remember the girl whose father goes there every autumn.
我记得那个女孩的父亲每年秋天都去那里。
They stopped talking when their boss came in.
当老板进来的时候；他们停止了交谈。