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
I am an atheist.
我是一个无神论者。
That's too much!
太过分了！
This one seems a little small for me.
这顶我戴好像小了一点。