As parts of the world become uninhabitable, millions of people will try to migrate to more hospitable areas.随着世界上部分地区变得不宜居住，将会有数百万人口试图迁移到环境更宜居的地区。They chatted about the relative merits of London and Paris as places to live.他们聊起了伦敦和巴黎两座城市相比较都有哪些宜居的优点。