Diolefins
二烯属; 二烯属烃
🗣️ 情景例句
and I'll think of a surprise.
我来想出一个惊喜。
I did homework lat night.
我昨晚做家庭作业。
He also said that he had found five empty whisky bottles which the ghost must have drunk the night before.
他还说他发现了5只空的威士忌瓶子，肯定是鬼魂昨天晚上喝的。