Concentring
v. 集中于一点
🗣️ 情景例句
It's not the same.
那可不一样。
What are you gonna do?
你打算怎么办？
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。