Human cloning technology may bring calamity or benefits to human being, and different people hold different opinions.

人类克隆技术既可能给人类带来福祉也可能带来灾难，不同的人具有不同的态度和看法。

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First, the cloning technology is difficult, very difficult to reach a certain number, even if there are so few clones will come into the world, may not be the threat to human survival.

首先，克隆人技术难度大，要达到一定的数量很难，即使将来有那么几个克隆人来到世界上，也不见得会威胁到人类的生存。

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Eggan said this does not mean it is no longer necessary to use the controversial methods to get real embryonic stem cells by using human embryos from fertility clinics or by using cloning technology.

Eggan说这并不意味着不再有必要利用有争议的方法，通过从生育门诊来人类胚胎或利用克隆技术，获得真正的人类干细胞。

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With human cloning technology just around the corner and enough frozen sperm in the world to already populate many generations, perhaps we should perform a cost-benefit analysis.

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In his State of the Union address, President George W. Bush advocated outlawing all use of cloning technology on human cells.

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