Perhaps most importantly, all of these positive trends are expected to continue. The United Nations estimates that average life expectancy will reach 75 years by the middle of the century, and that the proportion of those going hungry will drop below 4%.
也许更加重要的是，所有这些积极的趋势还会一直延续下去。联合国预计到本世纪中叶人均寿命会达到75岁，而面临饥荒的人口会降到不足4%。