据专家解释，这种现象非常罕见，原因是脂蛋白代谢异常或脂质沉积症，目前尚不清楚血液变色原因。
According to experts, this phenomenon caused bymetabolic abnormality of lipoprotein or lipoidosis is very rare. The reasonof the changing of the blood color is still unknown.
并不是所有物种都伴随有衰老的现象。一些研究表明通过使用某些药物或者改善饮食结构可以减速生物的新陈代谢以及改变基本的衰老过程，以此来帮助我们延年益寿。
Not every species ages, and some research suggests that drugs or changes in diet may slow metabolism or alter basic aging processes so that we can live longer.
早期的实验证明了这种现象，但是并不明确是由于硫化氢本身所起的作用，还是因为其间接的降低了老鼠的体温，从而导致新陈代谢的减缓。
Earlier experiments had demonstrated this effect, but it was unclear whether the gas was doing this itself or was acting indirectly by lowering body temperature, which also reduces metabolism.
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