Butenylidene
[化] 亚丁烯基; 1,1-亚丁烯基
🗣️ 情景例句
How many people will you be bringing?
你约了多少人来？
I live at 1203 Washington Street.
我住在华盛顿街1203号。
The village no longer existed because it had been submerged, and all the valley too.
村庄已不复存在，因为已经为水所淹，山谷也被水淹没了。