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。
As long ago as 1809, the Swedish Parliament introduced a scheme to safeguard the interest of the individual.
早在1809年,瑞典论会就建立一个保护公民利益的制度。