Olefination
烯化作用, 成烯作用
🗣️ 情景例句
No.
没有。
One of these days,I'd like to take a vacation.
某天,我想度假。
The next morning, he found that the doors had been blocked by chairs and the furniture had been moved.
第二天早上，他发现酒吧间的门被椅子堵上了，家具也被挪动过。