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。
Only two stray dogs benefited from all this confusion, for they greedily devoured what was left of the cake.
只有两只野狗从这一片混乱中得到好处,它们贪婪地吃掉了剩下的蛋糕。