"The best way to make a child laugh is to treat them like an adult."
让孩子笑的最好方法就是像对待大人一样对待他们。
若要优美的嘴唇,要讲亲切的话。
Thought is the most difficult task, which is why so few engage in it.
试管婴儿的研究是出于帮助不孕夫妇的愿望。