Sent_en: 2zh Kim Dunstan, Statistics NZ demographer, said: "The dramatic lifespan changes were attributed to many factors, including improved hygiene, sanitation, medicines and infectious disease control.
Sent_yy: 新西兰统计局人口学家金邓斯坦说：“寿命的急剧变化是由于许多因素造成的，包括个人卫生、环境卫生、药品和传染病控制的改善。