Babosil
钡硼砂
🗣️ 情景例句
That'll be thirty-six dollars, sir.
先生，车费是36元。
How would I know?
我怎么知道？
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。