Upgrading hydrocarbon
[化] 改质烃
🧩 词语组成解析
v. 升级；提高品位（upgrade的现在分词）
🗣️ 情景例句
This is more than I can bear.
我再也受不了了。
Never say die! Up man, and try.
不要气馁，朋友，振作起来，干！
I admire him for his success in business.
我佩服他事业有成。