你将你的长寿归因于什么?
To what do you attribute your ___longevity?
医疗保健的进步显著提高了人类寿命。
Advances in health care have significantly increased human ___longevity.
人口寿命的不断增长正给养老金体系带来压力。
The rising ___longevity of the population is putting a strain on pension systems.