Diolefins
二烯属; 二烯属烃
🗣️ 情景例句
I took out a government loan to pay for college.
我靠政府贷款上的大学。
Genius is one percent inspiration and 99 percent perspiration.
天才一分来自灵感，九十九分来自勤奋。
and the railway of the future may well be the 'hovertrain',
未来的火车或许能成为气垫火车，