Diolefins
二烯属; 二烯属烃
🗣️ 情景例句
Los Angeles? That's a big decision. Los Angeles
这可是个大决定。
Hey, guy, we're rich.
嘿，伙计，我们发财了！
When work continued, one man lit a cigarette as he was working, but, finding it had a strange taste, he put it out.
随后他们继续干活，一个工人在干活时点燃了一支香烟。可是他觉得有一股怪味，他就把烟灭了。