And biologists say that male and female have differences.
生物学家说男女有别。
Biologists say implausible that Onions could attract flu virus as a bug zapper traps flies.
生物学家说很难相信洋葱能像捕虫器那样吸收流感病毒。
Spanish marine biologists say, in general, they are seeing fewer jellyfish this summer than in other years.
西班牙海洋生物学家说:"总的来讲，今年夏季比往年见到的水母要少。
Between 300 and 400 black bears live in Nevada, and biologists say the population is growing 16% a year.
内华达州的黑熊数量介于300只至400只之间，生物学家称它们的数量每年增长16%。
In the face of this and other evidence a growing group of conservation biologists say try everything at the same time.
面对这些情况和其他证据，愈来愈多的自然资源保护生物学家说：应该同时尝试所有可行的办法。
When biologists say that they have observed evolution, they mean that they have detected a change in the frequency of genes in a population.
当生物学家说他们观察到进化时，意思是他们发现了一个种群中基因频率的变化。
Marine biologists say there is little research into the causes of shark attacks but point to several possibilities, all linked to humans themselves.
海洋生物学家认为尽管目前少有研究深入探询鲨鱼袭击的背后原因，但种种现象表明人类自身难逃干系。
But the best argument that life span is not hard-wired, biologists say, has long been evident: Living things age at significantly different rates.
但生物学家表示，能最好反驳生命周期不可改变这种观念的证据一直都显而易见：生物衰老的速度可以是天差地别的。
The mother humpback whale and her calf have made progress toward the Pacific Ocean in the past few hours but biologists say the pace has slackened.
在几小时前，母鲸和她的鲸宝宝移向太平洋有所进展，而生物学家表示它们的步伐减慢了。
When biologists say that humans and chimps have evolved from a common ancestor they mean that there have been successive heritable changes in the two separated populations since they became isolate.
当生物学家说人和黑猩猩是由共同祖先进化来的时，他们的意思是，自从二者分野后，这两个隔离的种群都发生了延续性的可遗传变化。
As a way of repairing some of that damage, a group of conservation biologists has proposed an ambitious, or some might say, a radical plan, involving large vertebrates, or, megafauna.
一群自然保护生物学家提出了一个雄心勃勃的计划——或者有人会说，这是一个激进的计划——即，把大型脊椎动物或巨型动物包含在计划中，作为修复部分损害的一种方法。
Biologists found a pregnant female roosting in a pine tree, and say they might be able to improve the bats' living situation.
生物学家们在一棵松树上发现了一只怀孕的蝙蝠妈妈，并说他们也许能够帮助改善蝙蝠的生存环境。
Plenty of biologists still say it's a mirage because we will never overcome the biological programme whereby cells die after a certain time, or indeed the rigours of wear and tear on the genome.
很多生物学家仍认为停止衰老只是一个幻想，因为我们永远不能克服细胞过段时间就会死亡，以及基因组的消耗磨损等生物程序。
This is nearly 1,000 times the "natural" or "background" rate and, say many biologists, is greater than anything the world has experienced since the vanishing of the dinosaurs nearly 65m years ago.
许多生物学家表示，这个速度几乎1000倍于“自然”或“背景”速率，而且是自6500万年前恐龙消失以来，世界经历的最大一件事。
Design improvements and energy savers like motion detectors will also reduce the amount of light that beams skyward, which biologists increasingly say disrupts nocturnal wildlife.
设计上的改进和一些感应器之类的节能设备也减少了投向夜空的光束——生物学家们越来越多地提到，这种光干扰到了夜行生物。
Scientists working with the technology say they do not expect robots to replace field biologists anytime soon. But the old-fashioned field work could soon be more targeted.
研究这种技术的科学家表示，他们并不期望自动仪器很快能取代实地考察的生物学家。但这种老式的野外工作很快可以更具针对性。
What exactly do biologists mean when they say that they have observed evolution or that humans and chimps have evolved from a common ancestor?
当生物学家说他们观察到了进化，或者说人和黑猩猩是由一个共同祖先进化来的，他们要表达的精确涵义到底是什么？
The researchers say that in the future, Hector could also serve as a platform for biologists and roboticists to test hypotheses about animal locomotion.
研究人员说，在未来，赫克托也可以作为生物学家和机器人专家，以测试对动物运动的假说提供了平台。
The technique, they say, could give biologists "atom-by-atom control" over the molecules in living organisms.
这项技术，他们说，能够让生物学家对生物体的分子进行 “各个原子逐一控制”。
Such intense use concerns biologists, who say the outlook for the park's wildlife is not a pretty picture.
这样密集的旅游使生物学家们很担心，他们说公园里野生动植物的远景并不是一幅美丽的画面。
Such intense use concerns biologists, who say the outlook for the park's wildlife is not a pretty picture.
这样密集的旅游使生物学家们很担心，他们说公园里野生动植物的远景并不是一幅美丽的画面。
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