the period during which something is functional (as between birth and death);
"the battery had a short life"
"he lived a long and happy life"
例句
用作形容词 (adj.)
The terrible experience had scarred him for life. 这一可怕的经历给他留下了终身的创伤。
He was facing a life of toil and drudgery and vexation. 摆在他面前的是终身的苦役和折磨。
用作名词 (n.)
The starvation and thirstiness tolerance of adults was described as the mean survival time. 以平均存活时间作为桔小实蝇饥渴耐受能力的指标。
Conclusions Bone marrow mesenchymal stem cells could increase the proportion of neurons in differentiation of neural stem cells and prolong the survival time of neurons. 结论骨髓间充质干细胞能提高神经干细胞分化为神经元的比例，还能延长神经元的存活时间。
美
[laɪftaɪm]
