a mass extinction meaning in Chinese

大规模毁灭

The cretaceous period ended about 65 million years ago , a mass extinction due to impact of an asteroid at chicxulub in mexico wiped out the dinosaurs , except for the birds
白垩纪期间结束了大约65百万年前,许多绝种由于小行星的冲击在chicxulub在墨西哥消除了恐,除了鸟。
Researcher bryanlaensler of he harvard - smithsonian center for astrophysics says if the explosion had occurred much closer to our solar system , qsay just 10 light years away , it would have severely damaged the atmosphere and possibly triggered a mass extinction of living things
哈佛史密森天文物理中心的研究员布莱恩?詹兹勒表示如果这次爆炸发生在离我们太阳系很近的距离，比如10光年远的话，它就会严重破坏我们的大气层，很有可能导致生命物种的大量灭亡。
Researcher bryan gaensler of the harvard - smithsonian center for astrophysics says if the explosion had occurred much closer to our solar system , say just 10 light years away , it would have severely damaged the atmosphere and possibly triggered a mass extinction of living things
哈佛史密森天文物理中心的研究员布莱恩?詹兹勒表示如果这次爆炸发生在离我们太阳系很近的距离，比如10光年远的话，它就会严重破坏我们的大气层，很有可能导致生命物种的大量灭亡。