科学家们围捕了通常的嫌疑人——总共140个活跃星系——并将它们和一个1200个非活跃星系组成的对照组作比较。
The scientists rounded up the usual suspects — 140 active galaxies in all — and compared them with a control group of 1200 inactive galaxies.
科学家们围捕了通常的嫌疑人——总共140个活跃星系——并将它们和一个1200个非活跃星系组成的对照组作比较。
The scientists rounded up the usual suspects — 140 active galaxies in all — and compared them with a control group of 1200 inactive galaxies.
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