Diene
[ ['daii:n] ]
高中 Senior High
[化] 双烯; 二烯烃
🗣️ 情景例句
In any case, you should prepare for the worst.
无论如何你要做好最坏的打算。
Sincerely hope that your visit here will be worthwhile and meaningful.
衷心希望您的来访有收获且意义深远。
My aunt Jennifer is an actress.
我的姑姑詹妮弗是位演员，