我们可根据岩石里的化石得出结论：自生命开始数百万年以来，许多物种已经灭绝了。

We can tell from fossil evidence in rocks that many living species have become extinct over the millions of years since life began.

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Victor Frankl说我们必须去探索发现各自生命的意义，我想他的意思是指我们需要去寻找各自最好的方式来增加附加值。

Victor Frankl said that we must detect the meaning in our own lives, and I think what he meant by this was that we need to figure out the best way of adding value.

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这个美国研究小组使用的干细胞取自生命初期的胚胎，不过他们希望能用皮肤碎片重复这个过程。

The American team used stem cells taken from embryos in the first days of life but

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