到2050年预计世界人口将从60亿增长到90亿,研究人员、企业和政府已经开始着手应对人口增长所带来的从食物、水资源到基础设施及就业等各方面的影响。
点睛本句的主干是researchers, businesses and governments are already dealing with the impact。句首是with结构作状语,impact后面的this increase will have是定语从句,对其进行修饰,注意此处省略了关系代词that。
have an impact on意为“对……有影响”。如:
These are major policy decisions and they have solved many important problems; they are bound to shake things up and have an impact on education, industry and other spheres. 这都是些很重大的决策,解决了很多重要的问题,一定会引起强烈反响,会影响到教育、工业等各个领域。