🗣️ 情景例句
That's the worst part--making decisions.
最伤脑筋的是要作决定。
I did the best I could.
我尽力了！
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。