Is cloning morally wrong and dangerous - or is it a valuable research tool?
克隆是违背或危害道德的——还是一种有价值的研究手段？
If you're collecting research for a project or just doing some online comparison shopping, this can be a valuable tool.
如果你在为一个方案进行研究或者只是在线比较商品价格，这将是个有用的工具。
The gene expression analysis will be a valuable tool for future research, says Asa Abeliovich, a neurologist at Columbia University Medical Center in New York.
纽约哥伦比亚大学医学中心的神经学家，认为对于基因表达的分析将成为未来研究的有价值的工具。
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