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
You didn't put film in the camera, silly!
笨蛋，摄影机里没有放胶卷。
He hesitated at nothing.
他对任何事都不会犹豫不决。
Sure! When do you want it?
当然可以！您什么时候要？