Diolefin
n. [化]二烯
🗣️ 情景例句
Did you look at them?
你看过了吗？
She contributed a lot of good ideas to the discussion.
她在这次讨论中提出很多好的意见。
Though we all got out to examine the fissure, he remained in the car.
我们纷纷下车察看那个大裂缝，他却呆在车上。