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。
Bill works harder than Joe and grows more flowers and vegetables, but Joe's garden is more interesting.
他比乔也更为勤奋,种植的花卉和蔬菜也更多,但乔的花园更富有情趣。