Dimethylbutadiene
[化] 二甲基丁二烯
??? 情景例句
Are you excited about graduating from high school?
你從高中畢業會不會感到很興奮呢？
When were you born?
你是什么時候出生的？
Oh, dear! said Miss Yang. Are you sure you've lost it?
“哎呀！”楊小姐說，“你肯定你弄丟了？”