Seyfert
n. 赛弗特星系
🗣️ 情景例句
I have approximately three-year experience using a computer.
我有大约三年操作电脑的经验。
When I had a rest, what were you doing?
当我休息时，你在做什么？
Even a telescope in orbit round the earth, like the very successful Hubble telescope, would not be suitable because of the dust particles iron solar system.
即使是一台放置在围绕地球的轨道上的望远镜——如非常成功的哈勃望远镜——也因为太阳系中的尘埃微粒而无法胜任。