人的基因改造工程在很多国家是被禁止的…

Genetic engineering on humans is baned in many countries.

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LS 9已经对大肠杆菌进行基因工程改造，以优化其将糖类转化成燃料的过程。

LS9 has been genetically engineering E. coli to optimize the process by which the bacteria converts sugar into fuel.

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现在的问题就是：基因工程的改造在什么范围内是合适的？

But the question remains: How much genetic engineering is feasible?

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