Diolefins
二烯属; 二烯属烃
🗣️ 情景例句
You said you wanted to be a doctor like your father.
你说过你希望像爸爸一样成为一名医生。
His argument doesn't hold water.
他的论点站不住脚。
We're having trouble meeting your shipping schedule.
要如期出货，我们有问题。