The dilemma over human cloning lies at the heart of the ethical choices facing society.人类克隆的两难处境本质上是社会面临的伦理选择问题。The reading for today is about human cloning.今天的阅读材料是有关克隆人的。They intend to introduce legislation to prevent human cloning.他们打算引入立法来阻止人类克隆。A lot of anxiety surrounds the issue of human cloning.人们对克隆人的问题很担忧。