A paper from Science of the Total Environment shows that the largest freshwater fish in China might have gone extinct between 2005 and 2010. Wei Qiwei, author of the paper, said in September, 2019, some experts supposed that the first-class protected fish had been extinct already.
《整体环境科学》的一篇论文显示，中国最大的淡水鱼可能已经在2005年至2010年间灭绝了。2019年9月，该论文的作者危起伟表示，一些专家认为这种一级保护鱼类已经灭绝。
"Six years ago, I was extinct as a player," he said.
“六年前，我以球员身份存在”，他说。
A hominid is really any extinct ape more closely related to us than the chimpanzee.
原始人类中任何一个灭绝的猿物种和我们的关系都比黑猩猩更密切。
To avoid going extinct a population must not only survive, but also reproduce.
避免种群灭绝不仅必须生存，而且要繁殖。
Cases in which many species become extinct within a geologically short interval of time are called mass extinctions.
许多物种在地质上很短的时间间隔内灭绝的情况称为大灭绝。
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.
高斯在实验室里进行了许多双物种实验，其中一个物种在只有一种单一资源的情况下就灭绝了。
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在试验室进行了大量的两个物种的实验，试验中，当只有单一的资源时，其中一个物种将会灭绝。
Geigl and her colleagues looked at 3200-year-old fossil bones belonging to a single individual of an extinct cattle species called an aurochs.
盖格尔和她的同事们研究了3200年前的骨头化石，这些骨头属于一种已经灭绝的叫做欧洲野牛的种类。
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，它也可以大致填补已灭绝种群空出的生态位，保持食物网的完整。
When a species goes extinct, it dramatically changes the landscape of biodiversity.
当一个物种灭绝时，它会极大地改变生物多样性的状况。
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。
America's national symbol, the bald eagle, almost went extinct twenty years ago, but it has made a comeback.
美国的国家象征秃头鹰在20年前几乎都灭绝了，但它的数量最终有所恢复。
The beavers were hunted a lot, overhunted, they are almost extinct by the 1800s, that meant fewer wetlands, less standing water.
海狸被大量捕杀、过度捕杀，到19世纪它们几乎灭绝了，这意味着湿地和静水变得更少了。
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的大量消亡为标志；当时，地球上多达一半的物种都灭绝了。
This was a landscape where antelope of all kinds abounded—along with Bos primigenius, a kind of oxen that has become extinct.
这是一片充满了各种羚羊的土地——还有原牛，一种已经灭绝的牛。
The US has already lost more than a third of the native languages that existed before European colonization, and the remaining 192 are classed by UNESCO as ranging between "unsafe" and "extinct".
美国本土语言在欧洲殖民以前就已经存在了，现在美国已经丢失了超过三分之一的本土语言。剩下的192种语言被联合国教科文组织列为介于“不安全”和“灭绝”之间。
A species once extinct is gone forever.
一个物种一旦灭绝就永远消失了。
Other features, however, show experts that Pakicetus is a transitional form between a group of extinct flesh-eating mammals, the mesonychids, and cetaceans.
然而，专家认为巴基鲸是已经灭绝的食肉哺乳动物中爪类和鲸类之间的过渡物种。
The fossil consists of a complete skull of an archaeocyte, an extinct group of ancestors of modern cetaceans.
“巴基鲸”化石由一个原细胞的完整头盖骨所组成，这是现代鲸类祖先中已经灭绝的一个物种。
A local population that goes extinct is quickly replaced by immigrants from an adjacent community.
当地消亡的人口很快就会被来自邻近社区的移民所取代。
For example, Peter Sheldon' s studies of trilobites, a now extinct marine animal with a segmented body, offer a detailed glimpse into three million years of evolution in one marine environment.
例如，彼得·谢尔登对于三叶虫的研究，那是一种已灭绝的身体分节的海洋生物，他的研究让我们得以一窥三百万年以来一个海洋环境的进化过程。
Altogether there are some ten thousand of these volcanoes on Earth, all but a few hundred of them extinct.
地球上总共有大约一万个这样的火山，其中只有几百个是死火山。
A piece of stone found on a Dutch beach suggests that our extinct human relatives, known as Neanderthals, were cleverer than previously thought.
在荷兰海滩上发现的一块石头表明，我们已经灭绝的人类亲戚尼安德特人比我们之前认为的更聪明。
It is now possible, too, to compare Homo sapiens with his closest relative-not the living chimpanzee, with whom he parted company perhaps 5m years ago, but the extinct Neanderthal, a true human.
而现在对比现代人类与他的近亲-不是活着的黑猩猩，它们5百万年前就已经和我们分家了，而是灭绝的穴居人，真正的人类-也是可能的。
A Japanese salmon species thought to be extinct for 70 years is alive and well in a lake near Mount Fuji, a science professor said Wednesday.
这位教授在周三时表示，70年前就被认为灭绝的日本国鳟鱼在富士山附近的一个湖里不仅有活本，而且它们种群兴旺。
Dickinsonia, for example, has been interpreted as being a relative of jellyfish, a Marine worm, a lichen, or even as a member of a completely extinct kingdom.
例如，狄更逊水母，有的说是水母的近亲，有的说是海底蠕虫，有的说是地衣，有的甚至说它属于一个已经完全灭绝的物种。
A special holding pen was reserved for "Blue Dogs," a breed that went extinct long ago.
一枝特别保留的笔为“蓝色狗”预留着，但蓝色狗是很久以前已经绝种了的品种。
Arem is a nearly extinct language of Vietnam and Laos.
Are m语是越南与老挝一种几近灭绝的语言。
A real-life Jurassic Park for extinct creatures has moved a step closer after scientists extracted DNA from the fossilised eggshells of birds
科学家们成功地从灭绝鸟类的蛋壳化石中提取DNA，从而为我们揭示了更为真实的侏罗纪公园 。
A real-life Jurassic Park for extinct creatures has moved a step closer after scientists extracted DNA from the fossilised eggshells of birds
科学家们成功地从灭绝鸟类的蛋壳化石中提取DNA，从而为我们揭示了更为真实的侏罗纪公园 。
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