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
But how do you plan to do that?
但你预备怎么做呢？
Newspapers are the world's mirrors.
报纸是世界之镜。
Leave me alone.
走开。