This substance has now been cloned by molecular biologists.
这种物质现已被分子生物学家克隆。
The two biologists found, to their surprise, that both groups of birds survived equally well.
这两位生物学家惊奇地发觉，两组鸟都同样很好地活了下来。
Both of us are biologists, so we swerved to talk about the elusive chameleon.
我俩都是生物学家，便转而去讨论这难以捉摸的变色龙。
Biologists calculate that there are about 20,000-25,000 polar bears worldwide.
生物学家估计，全世界大概有2万至2万5千只北极熊。
Since then wildlife biologists had reintroduced bald eagles from Canada to America.
从那时起，野生生物生物学家将白头海雕从加拿大重新引入美国。
Once, biologists thought that ducklings followed the mother duck because of instincts.
曾经，生物学家认为小鸭子跟随母鸭是出于本能。
Biologists generally agree that birds and dinosaurs are somehow related to one another.
生物学家普遍认为鸟类和恐龙在某种程度上是有联系的。
Most biologists, nonetheless, are doubtful that this is a humanlike adolescent growth spurt.
尽管如此，大多数生物学家还是怀疑这是否是一种类似人类的青春期突增。
The most radical strategy being debated among conservation biologists is Assisted Migration.
保护生物学家们争论的最激进的策略是辅助迁移。
Now biologists like Dr. Etheridge are digging into the scientific texts that accompanied her art.
现在，像埃瑟里奇博士这样的生物学家正在深入研究与她的艺术相关的科学文献。
There are biologists throughout the state constantly monitoring adult fish as they show up to spawn.
整个州都有生物学家在成年鱼出来产卵的时候持续监测着它们。
As early as 1966, biologists asked the government to consider reintroducing wolves to Yellowstone Park.
早在1966年，生物学家就要求政府考虑将狼重新引入黄石公园。
They believe the data support an idea current among marine biologists, that of the "shifting baseline".
他们认为这些数据支持了海洋生物学家中流传的“基线移动”的观点。
The biologists sit in streamside counting towers, study sonar, watch from aeroplanes, and talk to fishermen.
生物学家们会待在河边的计数塔中，研究声纳，从飞机上完成观察活动，以及与渔夫交谈。
Some biologists argue that ocean and air currents are responsible for the transport of plant seeds to Hawaii.
一些生物学家称，海洋洋流和空气气流是植物种子传播到夏威夷的原因。
Sporting advantage notwithstanding, therefore, the existence of left-handedness poses a problem for biologists.
因此，尽管具有体育优势，左撇子的存在给生物学家提出了一个问题。
Since at least Darwin time, biologists have been trying to understand and define the mechanisms for speciation.
至少从达尔文时代开始，生物学家就一直在试图理解和定义物种形成的机制。
Sporting advantage notwithstanding, therefore, the existence of left-handedness poses a problem for biologists.
因此，尽管具有体育优势，左撇子的存在给生物学家提出了一个问题。
By isolating organisms completely from external periodic cues, biologists learned that organisms have internal clocks.
通过将生物体与外部的周期信号完全隔离，生物学家了解到生物体有内部的生物钟。
In addition to the doctors, we're going to need more sociologists, biologists, urban planners and specialized lawyers.
除了医生，我们需要更多的社会学家、生物学家、城市规划者和专业律师。
Mechanical engineers have worked with farmers and biologists to produce fertilizers, machinery and harvesting systems.
机械工程师与农民和生物学家合作开发肥料、机械和收割系统。
Migration is a complex issue, and biologists define it differently, depending in part on what sorts of animals they study.
迁徙是一个复杂的问题，生物学家对此有不同的定义，定义的方法部分取决于他们研究的动物种类。
Biologists can infer how species are related evolutionarily by comparing DNA sequences for the same genes in different species.
生物学家可以通过比较不同物种中相同基因的DNA序列来推断物种之间的进化关系。
Biologists and other scientists turn their attention to plants and animals at an important meeting that took place last October.
在去年10月举行的一次重要会议上，生物学家和其他科学家把他们的注意力转向了植物和动物。
Biologists studying wild monkeys sometimes need the genetic material DNA from a particular monkey to determine the animal's parentage.
生物学家研究野生猴子时，有时需要某只猴子的遗传物质DNA来确定其亲子关系。
Now the biologists have moved into this minefield, and some of them have found that there are real differences between the brains of men and women.
现在，生物学家们已经进入了这个危机四伏的局面，他们中的一些人已经发现男性和女性的大脑确实存在差异。
By the early twentieth century, the question about the rate of evolution had been answered in favor of gradualism to most biologists' satisfaction.
到二十世纪初，关于进化速度的问题已经得到了答案，答案支持渐进主义，大多数生物学家对此感到满意。
The Yellowstone wolf project has been a valuable experiment to help biologists decide whether to reintroduce wolves to other parts of the country as well.
黄石国家公园狼计划是一项有价值的实验，有助于生物学家决定是否将狼重新引入美国其他地区。
The differences between the groups and the similarities within each group made it seem certain to most biologists that the tree of life had only two stems.
类群之间的差异和每个类群内部的相似性使大多数生物学家确信，生命之树只有两个树干。
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.
今年早些时候，当生物学家们在海军的帮助下，成功追踪到一只特定的蓝鲸长达43天并监测它的声音的时候，生物学家们很高兴。
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