B-b fraction
[化] 丁烷-丁烯馏分
🧩 词语组成解析
🗣️ 情景例句
What do you think of this place?
你觉得这个地方怎么样？
A light purse is a heavy curse.
为人无钱处处难。
The young man did not wake up until the bed had struck the ground.
那年轻人直到床撞到地上才醒了过来。