Sintox
陶瓷车刀
🗣️ 情景例句
Have you ever done any correspondence work?
你有处理文书的经验吗？
If I had had time,I would have called you.
如果我有时间，我就打电话给你了。
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。