Depropanization
丙烷馏除
🗣️ 情景例句
Thank you, Grandpa.
谢谢你， 爷爷。
I'm glad you come.
我很高兴，你能来。
When you come to think about it, there are only four ways you can deal with rubbish: dump it, burn it, turn it into something you can use again, attempt to produce less of it.
倾倒、焚烧、把垃圾变成再生材料或试图少产生一些垃圾。