On the cultural level, the cloning of human beings for reproductive natural alternatives and the negative, breaking the biological evolution of self-regulation, with the typical anti-natural nature.

就文化层面而言，克隆人是对自然生殖的替代和否定，打破了生物演进的自律性，带有典型的反自然性质。

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There is a federal moratorium on the use of federal funding for research on cloning humans and many scientists abroad are abiding by a self-imposed moratorium on cloning humans.

CNN: 'Raelian' biochemist insists she will clone human

Many scientists around the world are abiding by a self-imposed moratorium on cloning humans and several countries have laws that forbid cloning.

CNN: U.S. lawmakers debate limits on human cloning