lifespans是什么意思？

lifespans

• n. （人或动物的）寿命( lifespan的名词复数 )，存在期，使用期，有效期；

例句

• Healthier eating, longer lifespans and higher disposable incomes have helped to hold back the years. 虽然健康的饮食 、 命的延长和较高的收入对于人们延缓衰老起到了一定的作用.
• They've been called Shorts , due to their small stature but also their brief lifespans. 根据他们矮小的身材和短暂的生命周期,他们被称为“矮人”.
• Lifespans ranged from three years for the mice, to 23 or more for common backyard squirrels. 动物寿命从3年(老鼠)到23年甚至更多(普通的庭院松鼠).

柯林斯高阶英汉双解学习词典释义

• N-VAR
  （人、动植物的）寿命，预期生命期限
  The lifespan of a person, animal, or plant is the period of time for which they live or are normally expected to live.
  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。 They have extended the potential life span of humanity everywhere. 世界各地人类的预期寿命均有所延长。
• N-COUNT
  （产品等的）预期使用期限；（组织、想法等的）预期存在期限
  The lifespan of a product, organization, or idea is the period of time for which it is expected to work properly or to last.
  例句
  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。