Epitokous
异沙蚕型期的
🗣️ 情景例句
No sweat! I'd be happy to help.
没什么！很高兴我能帮上忙。
It's quite cold today.
今天天气相当冷。
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。