(返老还童)
Aging Backward
(返老还童)
We are used to the ideas of aging
ourselves. We are so used to this that it comes as a surprise to find that there may be some animals that do not age. Sea anemones(海葵)
are an example. Some have been kept for nearly a century without showing any signs of losing vigour(精神;活力). Some kinds of
marine (海的)worm can even “grow
backward”. If starved(饿)and kept in the dark,
they get steady (稳定的;持续的)smaller.
They finally end as a ball of cell(细胞;小室;s
单人牢房), looking rather like the egg grom which they came. Under favourable(赞成的;
有帮助的) conditions the ball will turn back to a worm and start growing again. One could probably keep them growing and “ungrowing”
indefinitely(模糊地;不确定地;无限期地).
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