B-b fraction
[化] 丁烷-丁烯馏分
🧩 词语组成解析
🗣️ 情景例句
Who do you think are better drivers: man or women?
你觉得男人跟女人，谁开车开得好一些？
I locked all the doors.
我锁好了所有的门。
'I left the money in my room,' I said, 'and it's not there now.
“我把钱放在房间里，”我说，“可现在没有了。