natural lifespan中文什么意思

自然寿命

• natural:    adj. 1.自然界的；关于自然界的 ...
• lifespan:    lifespan ＝ lifetim ...
• economical lifespan:    经济寿命

例句与用法

1. The authors of the study claim that current research on the effects of aspartame are based on studies that did not use a large enough sample of animals and did not allow the animals to lie out their natural lifespan
   这项研究的作者主张现有的关于阿巴斯甜的效果的研究是基于没有使用足够大数目的动物样本，从而使样本动物没有达到自然生活周期。