Butylethylene
[建] 丁基乙烯, 己烯
🗣️ 情景例句
We started by making safety equipment for many sports.
我们是以做运动产品的安全器材起家的。
We headed out to school.
我们出发去学校。
The damage was caused by external forces.
损害是由外力引起的。