To answer the first part of your question, I'd like to say that our studies were very extensive.
你问题的第一部分,我要说的就是我们的研究非常广泛。
I haven't told you that my family made a lot of money in the nineteenth century by making children work 16 hours a day in their factories.
我还没有告诉过你,我的家在19世纪的时候赚了一大笔钱,是强迫儿童在工厂里一天劳动16个小时赚来的。