所有这些都会导致危险的不稳定性。

All this makes for dangerous instability.

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第二，可能也是最重要的，他们知道什么会导致危险，进而可以将自己的风险尽可能降到最低。

Second, and—perhaps most importantly—they know that there are ways to approach an otherwise dangerous task in such a way that the risk is reduced to an acceptable level.

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因为基因的植入有可能导致危险的基因突变。除此之外，研究人员还必须想办法让植入的基因在细胞分化时自动分解。

Because adding new genes may cause unsafe mutations, the researchers must also figure out how to make the new genes delete themselves during cellular division.

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