It is possible tradition could fade away like natural species even if existence is just a shadow.
传统会否消失，就像自然界的物种一样，就算存在也不过是一阕影子。
It follows that over-exploitation is also the main cause of the decline in natural species of ocean fishery.
可见，过度 开采也是海洋渔业自然生物种类减少的主要因素。
It is said that man is the least biologically determined species of all because he possesses features absent in other natural species.
据说人类是生物学上最难归类的物种，因为人类拥有其他天然物种所缺乏的特性。
Enterprise culture: promote national culture, probe into natural goodness of sources, adopt natural species and return to healthy sources.
企业文化：弘扬民族之文化，探究物源之本善，运用天然之物种，回归健康之本源。
Some young folks like to go to the planetarium or get more information about the universe whereas bird lovers may go to the natural museums to see the evolution of different kinds of natural species.
一些年轻人喜欢去天文馆了解关于宇宙的各种信息，一些鸟类爱好者会去自然博物馆看各种自然物种的进化过程。
Some young folks like to go to the planetarium to get more information about the universe whereas bird lovers may go to the natural museums to see the evolution of different kinds of natural species.
一些年轻人喜欢去天文馆了解关于宇宙的各种信息，一些鸟类爱好者会去自然博物馆看各种自然物种的进化过程。
Commenting on the find, snake expert Robert Henderson, from the Milwaukee Museum of Natural History, said, "Worldwide, new species of frogs are being discovered and described quite regularly."
密尔沃基自然历史博物馆的蛇类专家罗伯特·亨德森对这个发现评价称：“在世界范围内，人们经常会发现和描述新种类的青蛙。”
Thanks to natural selection, most species that have ever lived has already gone extinct, so this is not a new phenomenon.
由于自然选择，大多数曾经存在过的物种已经灭绝，所以这不是一个新现象。
Snake expert Robert Henderson, from the Milwaukee Museum of Natural History, said, "Worldwide, new species of frogs are being discovered and described quite regularly."
密尔沃基自然历史博物馆的蛇类专家罗伯特·亨德森说：“在世界范围内，人们经常发现和描述新的青蛙种类。”
Zoos are at the forefront of conservation and constantly evolving to improve how they care for animals and protect each species in its natural habitat.
动物园处于动物保护的一线，其不断进步以改进照顾动物的方式，并在自然栖息地保护每一个物种。
Only the individuals of a species are subject to the pressures of natural selection.
只有一个物种的个体感受到自然选择的压力。
Ecosystems free of species defined as exotic are, by default, considered the most natural.
默认情况下，没有外来物种的生态系统被认为是最自然的生态系统。
A number of scientists question the assumption that the presence of alien species can never be acceptable in a natural ecosystem.
一些科学家质疑这样的假设，即在自然生态系统中，外来物种的出现是绝对不会被接受的。
War may be a natural expression of biological instincts and drives toward aggression in the human species.
在人类物种中，战争可能是生物本能和侵略冲动的自然表现。
This hazard is much increased with species that are well disguised and whose natural instinct is to trust to this concealment as their principal defense.
对于伪装得很好的物种，这种危险会大大增加，它们的自然本能就是相信这种隐藏是它们主要的防御手段。
"You can only do so much in a flask, and the mix of species would be much greater in a natural environment, " Jones pointed out.
“培养瓶中的实验差不多只能做到这个程度，自然条件下共生的物种数量要大得多。”琼斯指出。
Any preserves we set up to protect endangered species may become useless as the species are forced to migrate along with their natural homes.
我们为保护濒危物种而建立的任何保护区都可能变得毫无用处，因为这些生物被迫随着它们的自然栖息地迁移。
I'm going to talk today about research into a particular species of bird—the New Caledonian crow, whose natural habitat is small islands in the Pacific Ocean.
我今天要讲的是对一种特殊鸟类的研究——新喀里多尼亚乌鸦，它的自然栖息地是太平洋上的小岛。
Studies in the development of humans suggest that culture, whether taken as an effort against nature or a natural effort, is part of the development of the human species.
关于人类发展的研究表明，文化，无论是作为一种对抗自然的尝试还是自然的努力，都是人类发展的一部分。
They are investigating the autecology and natural history of rare species.
他们正在调查稀有物种的起源和自然史。
It tells us that there is no Intelligence controlling the cosmos, and that life itself is the result of a blind process of natural selection, in which innumerable species failed to survive.
它告诉我们不存在控制宇宙的神，生命本身是自然选择这一盲目进程的结果，在这过程中无数的物种未能幸存。
Though the tortoises are enormous, and the differences between the species noticeable, the concept of natural selection is not written out in neat script on their carapaces for the reading.
尽管这里的乌龟非常多，并且跟其它的物种有著明显的区别，自然选择的概念也没有字迹工整的刻写在它们的龟壳上供人阅读。
Much as we might like to believe otherwise, natural selection, working within each species, does not favour long-term stewardship.
与我们所相信的截然不同，作用于每一个物种的自然选择(规律)并不喜爱长远利益。
Millions of years ago, the natural environment was shaping us into the species we are now.
数万年来，自然环境渐渐的将人类塑造成现在这样的物种。
While scientists are shedding light on natural mechanisms that work to shape species, many questions in the field are brewing on the lab-bench.
正当科学家想让物种成形的自然机制透出光来(揭示其秘密)时，这个领域的许多问题也正在实验台上酝酿着。
And in fact, Skinner explicitly made the analogy from the natural selection of species to the natural selection of behavior.
实际上，斯金纳也确实明确地，对物种的自然选择，同行为的自然选择进行过类比。
Air pollution, endangered species, the polluted oceans, dwindling natural resources.
空气污染，濒危物种，海洋污染，自然资源匮乏。
Twelve years after he published "on the Origin of Species", which described the idea of natural selection, a second book hit the presses.
出版描述自然选择思想的《物种起源》十二载后，他的第二部书也付梓印刷。
Twelve years after he published "on the Origin of Species", which described the idea of natural selection, a second book hit the presses.
出版描述自然选择思想的《物种起源》十二载后，他的第二部书也付梓印刷。
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