life-span

n.

寿命；

1. The machine's life is very long.
   这机器使用寿命很长。
2. Women have a higher life expectancy than men.
   女人比男人的预期寿命长。

Extension of Life-Span by Introduction of Telomerase into Normal Human Cells
HIV-1 Dynamics in Vivo: Virion Clearance Rate, Infected Cell Life-Span, and Viral Generation Time
Requirement of NAD and SIR2 for life-span extension by calorie restriction in Saccharomyces cerevisiae.
A life-span, life-space approach to career development.
Extension of life-span by overexpression of superoxide dismutase and catalase in Drosophila melanogaster.
Discounting of Delayed Rewards: A Life-span Comparison
A mutant Drosophila insulin receptor homolog that extends life-span and impairs neuroendocrine function
Extension of Life-Span by Loss of CHICO, a Drosophila Insulin Receptor Substrate Protein
Leaf Life-Span in Relation to Leaf, Plant, and Stand Characteristics among Diverse Ecosystems
daf-16: An HNF-3/forkhead family member that can function to double the life-span of Caenorhabditis elegans