Tutrix
女监护人
🗣️ 情景例句
The book is above me.
这本书我读不懂。
What are you going to do with the books?
你打算拿这些书怎么办？
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。