进化生物学家对人类为什么会变老及死亡仍存在分歧。
The question of why we grow old and die still divides evolutionary biologists.
根据生物学家对老鼠的实验研究,睾酮水平高可能是导致疾病传播的一个重要原因。
High levels of testosterone may be a key factor in spreading disease among mice, according to biologists.
某些鱼的血液里存在特殊蛋白质,可以让它们不致冻死——生物学家对此早已有所认识的事实,丝毫不影响对这一显著的进化性状的惊奇。
SOME fish have special proteins in their blood to stopthem from freezing to death—a remarkable evolutionary trait made no less so bythe fact that biologists have known about it for some time.
因此今年早些时候。生物学家对能获得海军的帮助感到非常高兴。他们现在能对一只特定的蓝鲸进行长达43天的跟踪,并记录它发出的声音。
So biologists were delighted early this year when, with the help of the Navy, they were able to track a particular blue whale for 43 days, monitoring its sounds.
生物学家对胚胎干细胞的研究从未停止过,通过干细胞,科学家首次得以方便地制造出人脑细胞,从而研究致病的遗传改变。 现在他们在这一方面的进展如何? 且看下文分解。
Larry Goldstein: Stem cells are giving us a way, for the first time, to have true human brain cells in a dish that carry the genetic changes that we know can contribute to or cause disease.
这项研究由英国消费者杂志《WhichComputing》开展。该杂志让一位微生物学家对伦敦某办公室内的33个电脑键盘,一个马桶座和一个卫生间门把手进行细菌检测。
A study by British consumer magazine "Which Computing" asked a microbiologist to examine for bugs on 33 keyboards in a typical London office, a toilet seat and a toilet door handle.
为了消除这种杂草,生物学家建议用某种对人类和水生动物无毒的除草剂来处理受感染的部分湖泊。
In order to eliminate the weed, biologists proposed treating infested parts of the lake with a certain herbicide that is nontoxic for humans and aquatic animals.
20世纪早期的生物学家也得出了类似的结论,不过他们从概率的角度对其进行了限定,称没有理由可以说明进化不能倒退。
Early 20th-century biologists came to a similar conclusion, though they qualified it in terms of probability, stating that there is no reason why evolution cannot run backwards.
长期以来,生物学家一直在争论鸟类的产蛋在生物学上是否具有很高的成本,有的理论认为产蛋对能量或营养的要求很高。
Biologists have long debated about whether egg production in birds is biologically highly costly, some theorizing that egg production is energetically or nutritionally demanding.
从某种程度上来说,我是一名蚂蚁生物学家,所以我开始思考我们对昆虫的生命有什么了解,并且我知道昆虫世界对于人类而言仍有许多未知的领域。
I am, in part, an ant biologist, so my thoughts turned to what we know about insect life and I knew that much in the world of insects remains unknown.
曼彻斯特大学的进化生物学家苏珊娜·舒尔茨博士说,这项研究是值得称赞的,它试图丰富我们对人类语言进化的知识。
Dr. Susanne Shultz, an evolutionary biologist from the University of Manchester, said the study was praiseworthy in seeking to enrich our knowledge of the evolution of human language.
我对七宝太空啤酒的兴奋之情可以用日本冈山大学生物学家杉的话来总结,杉本是参与太空培育大麦应用于啤酒酿造的日本科学家之一,他说
My excitement for Sapporo space beer can be summarized by Okayama University biologist Manabu Sugimoto, one of the Japanese scientists involved with the use of space-grown barley in beer.
杜克大学的海洋生物学家辛迪李说:“我们对一个地点进行多次勘测,每次都会发现新的物种。”
“We go back to a site dozens of times and find new species routinely,” says marine biologist Cindy Lee Van Dover of Duke University.
生物学家们随后对巨蟒进食后血液中激增的特有脂类进行了鉴定。
The biologists then identified three specific lipids in python blood that increase after a meal.
但是生物学家开始对人类形成了普遍比较乐观的看法。
But biologists are beginning to form a generally sunnier view of humankind.
通过对一些红腹滨鹬的捕捉,标记和称重,生物学家已经能够在美国特拉华州湾里,拼凑出一幅令人担忧的趋势图。
By trapping, marking, and weighing the knots, biologists have been able to piece together some alarming trends in Delaware Bay.
加州大学圣地亚哥分校的生物学家阿吉特·瓦奇论述道:对自身死亡之必然的认知,会将进化引入死胡同。
Ajit Varki, a biologist at the University of California, San Diego, argues that the awareness of mortality on its own would have led evolution to a dead end.
这些遗传差异让生物学家们对以前并未怀疑过的某些特征开始仔细审视起来。
Such genetic differences can open the eyes of field biologists to previously unsuspected traits.
当时,柯林斯还是个蓄着连鬓胡子的年轻英国生物学家,他对研究狒狒有着强烈兴趣,在冈贝丛林,狒狒是另一种最为常见的灵长类。
Collins was then a young British biologist with muttonchop sideburns and a strong interest in baboons, the other most conspicuous primate at Gombe.
一位日本生物学家说:“这只对旅游业有好处,对天鹅没有好处。”
"Good for tourism, not the swans," a Japanese biologist says.
斯坦福大学的生物学家DeborahGordon研究亚利桑那沙漠的收获蚂蚁已有几十年的时间,他对这个概念有如下的概括:蚂蚁很笨,但蚁群很聪明。
Deborah Gordon, a biologist at Stanford University who has spent decades studying harvester ants in the Arizona desert, summed up the concept this way: "Ants aren't smart. Ant colonies are."
细胞生物学家Herman,自1980年代初期起就对周细胞进行研究。
Herman, a cell biologist, has been studying pericytes since the early 1980s.
“对掠食鱼来说,避免被一条鱼发现轻而易举,可要避免被一千条鱼发现就难上加难了”,华盛顿大学的生物学家丹尼尔•格朗鲍姆(Danielgrunbaum)讲道。
"It's much harder for a predator to avoid being spotted by a thousand fish than it is to avoid being spotted by one," says Daniel grunbaum, a biologist at the University of Washington.
生物学家爱德华·o·威尔逊曾指出这种与自然的疏离将荼毒人类的灵魂:“我们对自然世界遗忘得越多,就将从天国堕落得更深。”
The biologist E.O. Wilson has argued that this estrangement from nature is bad for the soul: "[we] descend farther from heaven's air if we forget how much the natural world means to us." 365.
大约在25年前,哈佛大学生物学家e . o .Wilson让“人类天生热爱大自然”的假说家喻户晓:即我们进化的历史用一种内在的对万物生灵的亲近感保佑着我们的想法。
About 25 years ago, the Harvard biologist E. O. Wilson popularized the "biophilia" hypothesis: the idea that our evolutionary history has blessed us with an innate affinity for living things.
但是这些最基本的信息对帮助生物学家研究海象如何应对北冰洋发生的巨大变化是非常关键的。
But that basic information is key to helping biologists figure out how walruses are coping with the dramatic changes in the Arctic Ocean.
国家卫生和流行病学研究所建立了公共卫生实验室诊断服务,对临床医师和微生物学家进行培训。
A public health laboratory diagnostic service was established at the National Institute of Hygiene and Epidemiology and training courses were conducted for clinicians and microbiologists.
国家卫生和流行病学研究所建立了公共卫生实验室诊断服务,对临床医师和微生物学家进行培训。
A public health laboratory diagnostic service was established at the National Institute of Hygiene and Epidemiology and training courses were conducted for clinicians and microbiologists.
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