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
Do you have a story?
你有什么新闻故事呢
You mind your business, and I'll mind mine.
井水不犯河水。
Don't you dare come back again!
你敢再回来！