Olefine
[化] 烯烃; 链烯烃
🗣️ 情景例句
We want to leave on May 1st and return on May 8th.
我想五月一日走，五月八日回来。
New York is famous for its tall buildings.
纽约以高楼大厦而闻名。
Thanks very much.
多谢。