Diolefins
二烯属; 二烯属烃
🗣️ 情景例句
And we brought someone along who can help.
而且我们带来了能帮助我们的人。
Diligence is near success.
勤奋近乎成功。
People enjoyed the stamps very much.
人们非常喜爱这些邮票。