Cernkov radiaion
[电] Cerenkov幅射
🗣️ 情景例句
Are there any parties going on tonight?
今晚有聚会吗？
Our company has agencies all over the world.
本公司在全世界各地都设有代理处。
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。