Pentaene
[化] 五烯
🗣️ 情景例句
I'd just like to repeat, do not be late!
我只想重复一遍，别迟到！
He recommended me for the post of principal.
他推荐我担任校长。
But some people don't want good farmland to be built on.
但有些人不愿意把好的农田用来建造厂房。