Ethylethylene
丁烯-1
🗣️ 情景例句
Am I getting a good deal on this?
这买这个值吗？
To run for freedom
为求自由而逃跑
Dickie left the shop without a word and returned carrying a large cloth bag.
迪基二话没说就走了。一会儿，他带着一个大布口袋回到店里。