Dialkene
二烯烃
🗣️ 情景例句
I wonder if your plan'll work.
我对你计划的可行性表示怀疑。
It is up to you to carry out the plan.
由你实行那个计划。
Hello! Did you enjoy yourselves at the party ?
你好！你们在晚会上玩得愉快吗？