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
What does she think?
她怎么想呢？
When all men speak no man hears.
人人都讲话，无人去听它。
Some so-called 'modern' pieces have been on display for nearly eighty years.
有些所谓的“现代”艺术品在那里已经陈列了近80年了。