Alathon
乙烯均聚物, 聚乙烯
🗣️ 情景例句
I think I can swing that.
我想我能办到这点。
What are you thinking about?
你正在考虑什么？
So the number of stars that we know exist is now estimated at about 300 million million million.
因此，我们所知道的现有恒星数目估计约有30亿×1000亿颗。