Their application to new productive treatments is particularly problematic because whose risk are we talking about--that of the egg donor, womb donor or the unborn child?
它们在新的有效的治疗方法上的应用是特别麻烦的，有很多疑问，尚不能确定，因为我们不知道所谈及的风险是属于哪一方面的－是卵子捐献者的，子宫提供者的，还是未出生的孩子的？

Books are the legacies that a great genius leaves to mankind, which are delivered down from generation to generation, as presents to the prosterity of those who are yet unborn.
书是智者, 这种代代相传, 直至久远。