澳大利亚大型动物的遭遇令人费解。
他们有这些大型动物在大厅里。
它是什么动物？是一种大型动物吗？
我们也知道，大型动物不容易排出身体多余的热量。
We also know that large animals can't easily get rid of excess body heat.
这种生长缓慢的大型动物很容易被猎杀，并很快被猎杀殆尽。
The large, slow-growing animals were easy game, and were quickly hunted to extinction.
生活在沙漠中的大型动物已经进化出许多适应能力，以减少极端高温的影响。
Large animals that inhabit the desert have evolved a number of adaptations for reducing the effects of extreme heat.
当史前人类来到一处新地方时，一些奇怪的事情发生在大型动物身上，那就是它们突然灭绝了。
When prehistoric man arrived in new parts of the world, something strange happened to the large animals: they suddenly became extinct.
比如说，像大象这样的大型动物比小型动物需要更多的食物和能量，而其后代比小型动物更少。
Large animals like elephants, say, they require much more food and energy and have fewer offspring than smaller animals.
库斯托通常是在开阔的海面上拍摄大型动物，而佩恩利夫往往拍摄较小的动物，他喜欢在浅水里拍摄。
Cousteau usually filmed large animals, usually in the open sea, whereas Painlevé generally filmed smaller animals, and he liked to film in shallow water.
灭绝也不仅仅局限于大型动物：小型动物、植物和昆虫的消失，或许不是全部都由于人类的食用而消失。
Nor were extinctions confined to large animals: small animals, plants, and insects disappeared, presumably not all through human consumption.
人类学家谢泼德·克雷奇指出，即使在没有证据证明古印第安人猎杀大型动物的地区，大型动物也灭绝了。
Anthropologist Shepard Krech points out that large animal species vanished even in areas where there is no evidence to demonstrate that Paleoindians hunted them.
虽然大象是大型动物，但在必要时它们可以悄悄地移动。
Although they are big animals, elephants can move silently when necessary.
不知为何好像杀死一只大型动物总归不是件好事。
狮子、老虎之类的大型动物在世界一些地方已被杀光。
Magnificent creatures such as lions and tigers have been hunted out of existence in some parts of the world.
这种强效毒液显然并不是冲着像我们这样的大型动物来的。
The potent venom is not meant for large animals like ourselves, of course.
麋鹿的状况还不错，但是它们并算不上大型动物。
然而，考虑到大型动物先天的新陈代谢效率，其贡献不可低估。
However, their contributions cannot be underestimated, considering the inherent metabolic efficiency of the large animals.
当史前人类来到地球的新区域时，给大型动物带来一些怪异的影响。
WHEN prehistoric man arrived in new parts of the world, something strange happened to the large animals.
不要错过这个气体在大型动物圆荚体骨头散在两个地点(13、14)。
Don't miss the Gas Pods scattered amongst the large animal bones in two locations (13, 14).
如果小动物缺乏天敌，如一些蝙蝠，他们就可以像大型动物一样存活数十年之久。
If they do not, as for some species of bat, then even a small creature can live for decades in just the way that a large animal would.
实际上，我并不善于自我保护，特别是当狮子那样的大型动物和人类猎捕我的时候。
I actually have trouble protecting myself, especially from larger animals like lions and from humans who hunt me.
所有的大型动物必须圈养起来，如果有猪跑到城堡边上来的话，士兵将奉命把它击毙。
All large animals had to be fenced in. If a pig wandered near the fort, soldiers were instructed to shoot it.
根据我对大型动物的丰富经验，我得出的结论是，牛仔竞技项目在本质上是不人道的。
Based upon my extensive experience with large animals, I have come to the conclusion that rodeo events are inherently inhumane.
而大型动物通过用它们的鳍或肢体滑水的方式游泳，这种方式在微观比例下是低效率的。
Whereas large animals swim by pushing against water with their fins or limbs, this approach is ineffective at very small scales.
1998年7月公布了一段20秒的视频，清楚地显示一只黑色的大型动物在荒原上游荡。
A 20-second video released in July 1998 clearly shows a large black animal roaming the moor.
这张大白鲨照片由潜水专家阿莫斯·纳科姆拍摄，他指导那些勇敢的潜水者与大型动物接触。
The great white image was captured by Amos Nachoum, an underwater expert who guides courageous scuba divers to encounters with the large creatures.
一方面，大型动物的脚相对它们的身体来说就算是小的，当然这是和小型动物相比。
For one thing, big animals' feet are smaller relative to their bodies than are smaller beasts'.
大型动物像是鲸鱼和海豚游过时，也能引起足够的扰动来产生光芒，就像船只划过时那样。
Large animals, like passing whales and dolphins, can also create enough disruption to produce a glow, as will passing boats.
如果海洋物种吸收放射颗粒的速度快于排出，放射性物质就能够聚集起来并影响食物链上层的大型动物。
If Marine species take up these radioactive particles faster than they break them down, the radiation can concentrate and affect larger animals that eat them.
如果海洋物种吸收放射颗粒的速度快于排出，放射性物质就能够聚集起来并影响食物链上层的大型动物。
If Marine species take up these radioactive particles faster than they break them down, the radiation can concentrate and affect larger animals that eat them.
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