As we consider the next-generation development agenda, it is also critical to understand that migration was a vital force in achieving the original MDGs. There are an estimated 215 million international migrants today –&#160;a number expected to grow to 400 million by 2040 –&#160;and another 740 million internal migrants who have moved from rural to urban areas within countries.
思考下一代发展议程时，理解移民是实现原有“千年发展目标”的生力军至关重要。今天国际移民总数约为2.15亿，到2040年预计将达到4亿的规模——另外还有7.4亿国内移民从农村迁移到城市居住。每个移民一般都供养着众多家庭成员，这有助于实现整个地区脱贫的目标。