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。
In 1893 New Zealand was the first nation in modern times to allow women to vote, long before many other countries.
3年,新西兰是第一个在近代就允许妇女参加选举的国家,这比许多其他国家要早得多。