Ia型超新星如此之亮，以至于在几个星期内它的寄主星系的光芒也相形见绌。
Type Ia supernovae are so luminous that they outshine their host galaxies for several weeks.
研究小组通过比较黑洞和它的寄主星系的质量，可以确定这些黑洞吞噬了多少物质。
The team also compared the masses of the black holes with the total masses of their host galaxies to determine how much matter they had swallowed.
研究小组通过比较黑洞和它的寄主星系的质量，可以确定这些黑洞吞噬了多少物质。
The team also compared the masses of the black holes with the total masses of their host galaxies to determine how much matter they had swallowed.
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