Butylethylene
[建] 丁基乙烯, 己烯
🗣️ 情景例句
The rural workforce has been flowing in to the cities ever since the open door policy was adopted.
自从改革开放政策实施以来，农付劳动力正不断流向城市。
Happy Spring Festival!
春节快乐！
Look, Scott.This is a photograph I took during my trip to Australia.
看，这是我到澳大利来旅行时拍的一张照片。