You did a good job sewing this dress, I can see that you sewed the sections in the correct order.
你这条裙子做得不错,我看得出来你是按顺序来做缝纫的。
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。