B-b fraction
[化] 丁烷-丁烯馏分
🧩 词语组成解析
🗣️ 情景例句
If we hire you, how long will you stay with us?
你打算给我们工作多久？
I cannot hear the tape.
这卷录音带什么都听不到。
Only one or two people have objected that the students will drive too fast!
只有一两个人提出反对意见，说学生们会把车开得太快！