试管婴儿的研究是出于帮助不孕夫妇的愿望。
The work on IVF was driven by the desire to help infertile couples.
人类大脑有一种原始的自我防御机制，会否定所有对大脑产生过大压力而无法处理的现实。
We are all alone in the universe, and the only thing that can bridge the gap between us is love.
邪恶胜利的唯一必要条件是好人的无所作为。