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。
The parquet floors shone like mirrors; highly polished silver was displayed in gleaming glass cabinets; even my uncle's huge collection of books was kept miraculously free from dust.
镶木地板洁如明镜,擦得发亮的银器陈列在明亮的玻璃柜里,连姑夫的大量藏书也保存得很好,奇迹般地一尘不染。