B-b fraction
[化] 丁烷-丁烯馏分
🧩 词语组成解析
🗣️ 情景例句
Donald passed away a couple of years ago.
Donald几年前去世了。
You are younger than I am.
你比我年轻。
Annie considered this was just the kind of demanding job she wanted.
安妮认为，这正是她想要的难度很大的工作。