B-b fraction
[化] 丁烷-丁烯馏分
🧩 词语组成解析
🗣️ 情景例句
How can I ever repay you for your kindness?
我该怎样才能报答你对我的好意呢？
Where were we?
我们刚才说到？
Fortunately people want to come and hear me play, but I am getting very tired of travelling.
幸运的是，人们都想来听我演奏，但是我对旅行感到厌倦了。