lifespan [ˈlaɪfspæn]

例句:

• A 15-year lifespan is not uncommon for a dog.
  15年的寿命对狗而言是比较常见的。
  
• Worms have a lifespan of a few months.
  蠕虫的寿命为几个月。
  
• Perhaps such a pill could improve lifespan of men.
  来自SA
• Most boilers have a lifespan of 15 to 20 years.
  绝大多数锅炉有15至20年的使用期限。
  
• The smaller the black hole, the smaller the lifespan.
  来自SA
• The most heartbreaking thing is their short lifespan.
  来自SA