Butylene-2
[建] 丁烯-2
🧩 词语组成解析
n. [化]丁烯
🗣️ 情景例句
I think what you've just said is a lot of baloney.
我觉得刚才你所说的都是胡扯。
But wouldn't you like to spend an extra day or two here?
你们不愿意在北京多待一天吗？
It's nine forty.
九点四十了。