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为什么人类无法实现长生?科学家:答案可能比你想象的还要复杂
宇宙是浩瀚无穷的,在宇宙中有很多的天体存在,地球就是宇宙中的一颗行星,经过几十亿年的时间,地球的环境变得很好,慢慢地诞生出地球生物,而人类也是地球生物进化而来的,在地球漫长的46亿年中,出现过很多生物种类,但是每一种生物都有自己的寿命,比如人类的寿命 ...
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