Leatherback
n. 棱皮龟
🗣️ 情景例句
What channel?
哪个频道？
Two dollars and seventy-five cents.
二美元七角五分。
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。