Diolefins
二烯属; 二烯属烃
🗣️ 情景例句
Let's take Gemma by there now.
我们赶紧把Gemma送去。
I met one of the cameramen over at the television station.
我在电视公司遇到一位摄影师。
The following Thursday, Zheng Jie rings the bell of Mr Brain's house.
下一周的星期四，郑杰按了布雷恩先生家的门铃。