B-b fraction
[化] 丁烷-丁烯馏分
🧩 词语组成解析
🗣️ 情景例句
If I've ever been sure of anything, I'm sure of this; your team is going to lose the same game on Saturday.
这一次我十分肯定：你们队星期六的比赛会输。
Pick on someone your own size!
不要以大欺小！
I envy you for your ability to cope with the situation.
我羡慕你有能力应付这个情况。