Olefin
n. 石蜡, 烯烃\\n[化] 烯烃
🗣️ 情景例句
Let's have some music!
我们来点音乐吧！
If you have cows you have to get up early to do the milking.
如果你有奶牛，你不得不早起挤奶。
Could you do me a big favor?
能否请你帮我个忙？