Conylene
[化] 1,4-辛二烯(的别名)
🗣️ 情景例句
Six words.
六个字。
Why are you so busy?
你为什么这样忙碌？
The most wonderful piece of machinery on show was Nasmyth's steam hammer.
其中最奇妙的是内史密斯的蒸汽锤。