恒星爆炸后的残余物中心是什么？
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- 没事人Tim
怎么这么快
张小明0607 回复 @没事人Tim: 确实快，雅思听力 1.25 倍速差不多。不过可能国外新闻就是这个语速
- 晴禹闲人
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- 网卡了咋办
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- 听友229309865
Twenty Quadrillion sounds like a lot of ants, and it is. To give you an idea, that's two and a half million ants for every human on earth. To count them at once a second will take 634 million years, so no one has tried that. But scientists involved in this report have made their estimate by consulti
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