It is estimated that more than 60 percent of Toronto's population trace their roots
问题描述：
It is estimated that more than 60 percent of Toronto's population trace their roots
It is estimated that more than 60 percent of Toronto's population trace their roots to countries other than Britain
答
据估计60%的多伦多人追溯他们的祖先时,发现他们的祖先并非来自英国.