As a result, galaxies in clusters become starved of gas over time, and black hole activity and star formation in these galaxies slows.
结果，随着时间的推移，星系团内的星系就会缺乏气体，因此这些星系中黑洞的活跃性减弱，新星的形成速度放慢。
This unusual explosive and intense star formation activity qualifies as a starburst.
这种不寻常的爆发和剧烈的恒星形成活动有星暴的资格。
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