• Boundary clay layers are used by scientists to determine the rate at which an extinct species declined.

    边界粘土科学家用来确定一个灭绝物种衰落速度

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  • An extinct species or race of human beings, Homo neanderthalensis, associated with Middle Paleolithic tools.

    作为已灭绝物种人类种族,尼安德特旧石器时代中期的工具有关

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  • This is an extinct species of fish.

    一种已经灭绝

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  • This is an extinct species of fish.

    一种已经

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  • If you want a list of Ron Artest 'enemies, just check the extinct species list.

    假如敌人列表那就往查物种列表。

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  • Australopithecus, Cro-Magnon, Neanderthal are to name but three extinct species.

    南方古猿人、克罗·马尼翁人、安得特尔人三种灭绝物种名字

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  • Tentative attempts to use cloning to bring back extinct species are already under way.

    克隆手段来使灭绝动物重新回到世界上的尝试工作已经开始。

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  • A technology used to develop new medical treatments might one day revive endangered or extinct species.

    科学技术常常带来新的医学疗法有一这些新疗法可能会拯救濒危物种甚至重现灭绝的物种。

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  • The breakage frequencies in the extinct species were strikingly higher than those in the present-day species.

    这些已灭绝物种牙齿破损发生率要明显高于现存物种。

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  • Dr Manning said: "the potential for this technique to gently un-pick the chemistry of long extinct species is quite breathtaking."

    Manning博士:“这项技术对于分析已灭绝动物化学特性潜力十分巨大的。”

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  • Certainly no one can argue that many, and perhaps most, extinct species became extinct naturally rather than due to human interference.

    许多业已灭绝物种或许大多数已灭绝的物种,是由于自然原因人类干扰的原因而灭绝,一点肯定无人质疑

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  • No sooner had she finished watching that programme about those extinct species, than she decided to join the Wildlife Conservation Organization.

    一看那个关于灭绝物种电视节目,就立志加入野生动物保护组织。

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  • This was verified by the Oxford researchers using 511 different samples ranging from extinct species only available as fossils, up through current living examples.

    牛津的研究人员511个不同例子证明了,它们的范围灭绝动物的化石现存的例子都有。

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  • An extinct species or race of human beings, Homo neanderthalensis, living during the late Pleistocene Age in the Old World and associated with Middle Paleolithic tools.

    安德特:已灭绝人类类型种族尼安德特人,生存于太古时代更新世晚期,与旧石器时代的工具有联系。

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  • The success of this technology and improve the quality of poultry for the vegetative propagation of rare and endangered animals, extinct species of great significance Chuan.

    这一技术成功完善对于优良家禽无性繁殖濒临绝迹珍贵动物的传种意义重大

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  • "If the atmosphere filled up with nitrogen, mankind would not survive," she continued, as we inspected an extinct species of bird. "that does not mean that mankind deserved to die."

    如果大气充满氮气时人类是无法生存,”我们在考察一个灭绝鸟类物种的时候,接着说:“并不意味着人类该死。”

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  • Cases in which many species become extinct within a geologically short interval of time are called mass extinctions.

    许多物种地质上很短时间间隔灭绝情况称为灭绝

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  • Geigl and her colleagues looked at 3200-year-old fossil bones belonging to a single individual of an extinct cattle species called an aurochs.

    格尔同事们研究了3200年前骨头化石,这些骨头属于一种已经灭绝叫做欧洲野牛种类

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  • Even if the new population is of a different species, it can approximately fill the niche vacated by the extinct population and keep the food web intact.

    即使新的种群属于不同物种也可以大致填补已灭绝种群生态位,保持食物完整

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  • They will tum out to be the second-largest species of birds to become extinct.

    它们成为第二灭绝鸟类

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  • Gause performed numerous tow-species experiments in the laboratory, in which one of the species became extinct when only a single kind of resource was available.

    高斯实验室进行许多物种实验其中个物种只有单一资源情况下就灭绝了

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  • When a species goes extinct, it dramatically changes the landscape of biodiversity.

    一个物种灭绝时,会极大地改变生物多样性状况。

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  • Whatever the cause, dinosaurs, as well as about half of all species on the planet, went extinct.

    不管什么原因恐龙以及地球几乎半数以上的物种灭绝了。

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  • This break in Earth's history is marked by a mass extinction, when as many as half the species on the planet became extinct.

    地球历史上的这次重大灾难以物种大量消亡标志;当时地球多达一半物种都灭绝了。

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  • 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不是一个现象

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  • Humans arrived in the Kaliko Islands about 7,000 years ago, and within 3,000 years most of the large mammal species that had lived in the forests of the Kaliko Islands were extinct.

    人类大约在7000年前到达加里群岛3000年内生活加里科群岛森林中的大型哺乳动物物种大部分灭绝

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  • Meteorite impacts can be advantageous for some species, which thrive, and disastrous for other species, which become extinct.

    陨石撞击某些物种有利的,它们会茁壮成长其他物种则是灾难性的,它们会灭绝

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  • A species once extinct is gone forever.

    一个物种一旦灭绝就永远消失了

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  • The Russian biologist G. F. Gause performed numerous tow-species experiments in the laboratory, in which one of the species became extinct when only a single kind of resource was available.

    俄罗斯生物学家G. F.Gause试验室进行了大量两个物种实验,试验只有单一资源时,其中一个物种将会灭绝

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  • The Russian biologist G. F. Gause performed numerous tow-species experiments in the laboratory, in which one of the species became extinct when only a single kind of resource was available.

    俄罗斯生物学家G. F.Gause试验室进行了大量两个物种实验,试验只有单一资源时,其中一个物种将会灭绝

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