1·There's always some guesswork when studying extinct animals.
在研究灭绝的动物时，总要做一些猜测。
2·They will tum out to be the second-largest species of birds to become extinct.
它们将成为第二大灭绝的鸟类。
3·Boundary clay layers are used by scientists to determine the rate at which an extinct species declined.
边界粘土层被科学家用来确定一个灭绝物种衰落的速度。
4·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。
5·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。
1·The idea of cloning extinct life forms still belongs to science fiction.
对绝种的生命形式进行克隆的想法仍然属于科学幻想。
—— 《柯林斯英汉双解大词典》
2·But sadly, we are now on the verge of becoming an extinct - or at least threatened - species.
但是令人伤心的是，现在我们却站在了绝种，或者是濒临绝种，的边缘。
3·And now we hear about animals and plants going extinct every day — vanishing forever.
我们每天都会听说有的动物和植物绝种，那是永远消失的事情。
4·Our zoos will most likely fill with animals that are now extinct.
我们的动物园将充满现已绝种的动物。
5·Some species of animals became extinct because they could not adapt to the changing environment.
有些动物已经绝种了，因为它们不能适应环境的变化。
1·When the second Marquis Cornwallis died sonless, the marquisate became extinct.
当第二个康沃利斯侯爵无子而死时，侯爵就绝迹了。
2·Not long ago, newspapers and magazines reported that, by the end of the century, redheads, of whom I am one, will be extinct. Gone.
不久之前，新闻杂志纷纷报道，本世纪末红头发的人——本人也是其中之一——将会绝迹，也就是消失、完蛋。
3·But the capture of a snow leopard, once believed to be extinct in Afghanistan, didn't stay secret for long.
长期以来，雪豹被认为在阿富汗已经绝迹，因此有人捕获雪豹的消息绝对无法成为长期的秘密。
4·It is the whaling stations that are now extinct.
如今，绝迹的是捕鲸站；早已一去不复返的是捕海豹者。
5·Some palaeontologists think them members of a phylum that is now extinct.
有的古生物学家认为它们属于已经绝迹的一门动物。
1·Was the fire wholly extinct there?
这里的火已完全熄灭了吗？
2·To the northwest of Chandragup I, the eroded rim of an extinct mud volcano is visible; its eastern rim is more noticeable than its western rim.
在干德拉格普1号峰的西北面可以看见一个已经熄灭的泥火山的侵蚀边缘；其东面边缘看起来较西面被侵蚀得更为明显。
3·And the other islands, well, the farther away from the plume they are now, the older they are, and the longer ago their volcanoes went dormant or extinct.
而其他岛屿，它们现在离地幔柱越远，形成的时间就越长，它们的火山沉寂或熄灭的时间就越早。
1·He proves that the old-school style of coding may be antique but isn’t extinct.
他向世人证明这种教条般的学究风格虽犹如古董，但并没消亡。
2·Some scientists predict human beings will be extinct in a few hundreds of years, and then any trace of human life will also disappear completely in about 2000 years.
有科学家预言，人类将在几百年后消亡，而人类活动的遗迹将在二千年后荡然无存。