Ethynes
[化] 炔烃
🗣️ 情景例句
But it's fun.
但很有趣。
What do you want to be after school?
当你完成学业以后，你要做什么？
Recent developments in astronomy have made it possible to detect planets in our won Milky Way and in other galaxies.
天文学方面最新发展使得我们能够在银河系和其他星系发现行星。