Setiger
刚节
🗣️ 情景例句
Oh, there's nothing wrong, Michelle.
噢 ，没什么， Michelle。
What will you do during this weekend?
这周末你干什么？
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。