您要查找的是不是：
- Modern medicine has increased man's life span. 现代医学延长了人的寿命。
- maximal life span 最长寿命
- Normal cells show a finite life span. 正常细胞显示有限的生命期。
- Modern medicine has increased man rs life span. 现代医学延长了人的寿命。
- The estimated life span is to predict the average. 估计寿命是预计一个人能活的平均年数。
- How Much Can Human Life Span Be Extended? 人类的寿命能延长到多久?
- Narwhals maximum life span is about 50 years. （寿命：独角鲸的最大寿命大约为50年。）
- Eating more fruit can extend your life span. 多吃水果能延年益寿。
- The average life span for the nominee group was just over 76 years. 提名者小组的平均寿命略高于76岁。
- At one time, the human species had a 2000-year life span. 曾有一段时期，人类物种拥有2000年（人类年）的寿命。
- LIFE SPAN Narwhals maximum life span is about 50 years. 寿命:独角鲸的最大寿命大约为50年。
- Any battery has a finite life span no matter what device it powers. 任何电池都具有有限的寿命，无论它具有多大的能量。
- The upper bound of life span for the solution was obtained. 得到了解的爆破时间跨度的上界。
- But two copies doom the bearer to pain and a shortened life span. 但同时带有两个突变的基因，却会让个体疼痛并且寿命减短。
- A typical life span for Sumatran orangutans is 40 to 50 years. 苏门答腊猩猩的平均寿命在40到50岁。
- Pray that: In every day joyful happy , grinning all the time, keep in memory have my such friend , be that maximal life harvests, because of the happiness being also that life on the way is maximal! 祝福：每天开心快乐，笑口常开，记得有我这样一个朋友，是最大的人生收获，因为也是人生路上最大的幸福！幸福常陪左右！
- The average dollar bill has a life span of about 18-22 months. 美元纸币的平均寿命是大约18-22个月。
- The life span of the people of Ningxia has increased to 69 from 30 before 1949. 宁夏人均寿命由1949年前的只有30岁左右,增加到目前的69岁。
- His life spanned almost the whole of the 1 9 th C . 他的一生几乎跨过整个19世纪。
- His political life spans half a century. 他的政治生涯长达五十年。
