就像寿命一样，不同生物的新陈代谢率与身体质量有着固定的数学关系。
Like the life span, the metabolic rate has for different organisms a fixed mathematical relationship to the body mass.
由于我们这样的行星的寿命是几十亿年，我们可以预测，如果我们星系中有其他生物生存，它们的年龄将从零到几十亿岁不等。
Since the lifetime of a planet like ours is several billion years, we can expect that, if other civilisations do survive in our galaxy, their ages will range from zero to several billion years.
直到不久前，这些研究都仅限于一些在基因上与人类相距甚远的短寿命生物。
Until fairly recently, the studies were limited to short-lived creatures genetically distant from humans.
与寿命相比，这种关系是“反向的”：生物体越大，其代谢率越低。
In comparison to the life span this relationship is "inverted": the larger the organism the lower its metabolic rate.
这些生物往往体型较大、寿命较长，并且每年在繁殖上花费的精力相对较少。
These organisms tend to have big bodies, are long-lived, and spend relatively little effort each year on reproduction.
它们是这个星球上最大，叫声最响，寿命最长的生物，但它又是那么难以捉摸，尽管身形巨大却很少有人睹其真容。
It is the largest, loudest, longest-lived creature ever to exist on our planet. Yet it is elusive, and for all its magnificent bulk, barely seen.
得分和更长的寿命。如果科学家们能够解决造成这种生物学差异的原因，也许就能缓解人们的先天差距。
And if scientists can unravel what underlies these biological differences, they might be able to alleviate inborn disparities.
在生物衰老和如何延缓衰老的潜在的里程碑式的研究中，一种药物使老年小鼠延长了相当于人类13年的寿命。
In a potentially landmark study on the biology of aging and how to delay it, a drug gave elderly mice the human equivalent of thirteen extra years of life.
从鼠类到实蝇的短寿命生物科学研究支持这一观点。 但通过对比人类与其他灵长类动物的首个多种群衰老形式后发现，人类的衰老速度与他无异。
This belief was upheld by scientific studies of short-lived creatures ranging from rats to fruit flies.
然而，后一个问题，生物学已经有了几种解释，它们都以长寿命与生殖能力的平衡为中心。
For the latter, though, biology has several explanations, all of which revolve around a trade-off between longevity and the ability to reproduce.
许多住在同一个生物体的寿命可以长达6,000年，有些甚至到12,000年！
Many lived lifetimes in the same biology for 6,000 years, some to 12,000 years!
这个现象表明对人类寿命差异的解释也许根植于我们的生物学中。
This phenomenon suggests that the explanation for the difference within humans might lie deep in our biology.
十多年以来，科学家已经了解到，低卡路里的饮食能够延长很多生物的寿命，包括酵母菌、果蝇、猴子，可能还包括人类。
For more than a decade, scientists have known that a low-calorie diet lengthens the lives of many organisms, including yeast, fruit flies, monkeys, and perhaps humans.
专家们认为，这是迄今为止人类发现的寿命最长的生物，它密切关系到人类很可能在银河系的其他地方找到生命的存在。
The discovery of the oldest living beings ever found has profound implications for the likelihood of life being found elsewhere in the galaxy, the experts believe.
这项新的研究发表在《公共科学图书馆·生物学》上，在该研究中，产生更多自由基的蠕虫或者服用了促进产生自由基的除草剂的蠕虫竟然比普通蠕虫的寿命长。
In the new study published in PLoS Biology, worms that made more free radicals or that were treated with a free-radical-producing herbicide actually lived longer than normal worms.
树木是地球上寿命最长的生物之一。
Trees are some of the longest-lived organisms on the planet.
我们寿命在延长，生物钟却未能同步。
Our biological clock has not kept pace with our ability to prolong our life spans.''
Pollard博士和他的同事发现，北面海域中浮游生物的确比南面海域中的体型更加硕大，而且寿命也更长，这与地球工程中的预期一致。
Dr Pollard and his colleagues found, as geo-engineers would hope, that phytoplankton blooms in the waters north of the islands were bigger and longer-lived than those to the south.
在膜生物反应器中使用聚丙烯中空纤维膜材料的膜组件，可以解决以往其它材料寿命短、强度低、易污染等问题。
The application of polypropylene membrane in MBR could resolve the problems of short life span and low strength that arc usually possessed by other material of membrane.
寿命可生物降解覆盖物为9个月和生物降解性低隧道薄膜的6个月。
The lifetime of the biodegradable mulches was 9 months and of the biodegradable low-tunnel films 6 months.
他们的结论是，如果不考虑生物医学上延缓衰老的新突破，从死亡率的趋势看，85岁是预期寿命的上限。
They concluded from death rate trends that 85 years is the upper limit on life expectancy, barring biomedical breakthroughs to slow aging.
用条纹相机测定了血卟琳、核黄素有机生物大分子的激发单态s_1的寿命。
The lifetimes of the excited singlet states S1 of the organic biological macromolecules haematoporphyrin and lactoflavin were measured with streak camera.
人工湿地生活污水处理方法及系统。属污水和泥渣的处理类。解决现有人工湿地生物膜堵塞、寿命短的问题。
An artificial wetland sewage processing method and system belongs to processing of sewage and sludge, can solve problems of present artificial wetland biological film obstruction and short life.
结果表明，与生理盐水对照组相比，青蒿素及其糖基化衍生物均可有效抑制肿瘤的生长和延长小鼠寿命，毒性实验表明属于低毒类物质。
Compared with normal sodium, the results showed artemisinin and its glycosylated derivates can suppress growth of tumor and increase in life span of mouse.
统一的生物体创造无害的生命，能维持它的健康并延长寿命。
Unity biology creates a harmless life that can retain its health and extend its life.
他说，正因为如此，平均预期寿命不可能远远超过90岁，除非出现生物医学的奇迹。
Because of this, he says, average life expectancy cannot increase to much more than 90 years without biomedical miracles.
介绍了活性炭的物理特性、使用寿命、在水处理中的作用以及生物活性炭工艺主要的影响因素。
Physical characteristics, service life, effect of biological activated carbon process in drinking water treatment process and main influencing factors were introduced.
介绍了活性炭的物理特性、使用寿命、在水处理中的作用以及生物活性炭工艺主要的影响因素。
Physical characteristics, service life, effect of biological activated carbon process in drinking water treatment process and main influencing factors were introduced.
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