So my colleague Dr. Robert Govers and I have spent the best part of the last two years, with the help of a large number of very serious and clever people, cramming together all the reliable data in the world we could find about what countries give to the world.
我的同事Robert Govers博士和我花了 过去两年的大部分时间， 在许多非常认真而聪明的人们的帮助下， 搜集了世界上所有 我们能找到的或国家愿意向世界提供 的数据。