所有爬行动物都必须自然脱皮才能成长
这种爬行动物的皮肤坚韧并带有鳞片。
大多数爬行动物通过在陆地产卵进行繁殖。
那只小鸡长得很丑，看起来几乎像只爬行动物。
爬行动物曾经位居食物链顶端。
蛇，龟和鳄鱼都是爬行动物。
它们的头骨、骨盆和后脚属于爬行动物。
大多数爬行动物会怕猫吗？
海龟是带壳的爬行动物。
巨型蟾蜍和安第斯鬣蜥是爬行动物的代表。
The Giant Toad and Andean Iguana are some examples of reptiles.
鳄鱼是爬行动物。
相比于爬行动物，哺乳动物的这一特性更加典型。
当然，对于爬行动物来说，这是一个平衡的过程。
我的意思是，鳄鱼的大脑是所有爬行动物中最发达的。
I mean, crocodiles' brains are the most developed of any reptile.
尽管其他皮质永久丧失，爬行动物的大脑仍在自动运行。
The reptilian brain is functioning on autopilot despite the permanent loss of other cortexes.
鱼龙是与恐龙同时代的爬行动物，它有鳍和流线型的身体。
Ichthyosaurs were reptilian contemporaries of the dinosaurs, with fins and streamlined bodies.
虽然爬行动物身上通常都有鳞片，但翼龙的皮可能有很多毛。
Although scales typically cover reptiles, the pterosaurs probably had hairy coats.
鳄鱼也有类似的声音，这使得它们在爬行动物中变得独一无二。
Crocodiles have a similar level of, vocal sophistication, which makes them unique among reptiles.
从那种意义上来说，比起其他爬行动物的大脑它们更接近哺乳动物的大脑。
In that sense, they are closer to mammals' brains than other reptiles' brains.
今天，让我们来看看一种爬行动物，一种在过去七千万年里没有进化很多的食肉动物。
For today, let's look at a reptile, a predator that hasn't evolved much in the last seventy million years.
一些科学家认为，许多种类的恐龙的新陈代谢更像温血哺乳动物，而不是冷血爬行动物。
Some scientists contend that many species of dinosaur had a metabolism more like a warm-blooded mammal's than a cold-blooded reptile's.
在这份报告的十年间，在新几内亚发现了43种新的爬行动物，包括这种巨人弯趾壁虎。
Some 43 new reptile species were found on New Guinea during the report's ten-year period, including this giant bent-toed gecko.
爬行动物的骨骼生长在本质上是周期性的，在骨头上产生一系列的同心圆，就像树木的年轮一样。
Bone growth in reptiles is periodic in nature, producing a series of concentric rings in the bone, not unlike the growth rings of a tree.
虽然现代爬行动物一般不会形成纤维板层骨，但在最佳环境下长大的幼年鳄鱼却能形成纤维板层骨。
Although modern reptiles generally do not form fibro-lamellar bone, juvenile crocodiles raised under optimal environmental conditions do.
因为它们是两足动物，它们的手臂可以自由地进化出拍打的翅膀，这在当时的爬行动物中是不可能的。
Because they were bipedal, their arms were free to evolve flapping flight, which cannot be said for other reptiles of their time.
来自印度的55000张爬行动物皮、厄瓜多尔的19000只大眼长尾鲨鳍和亚洲的23吨穿山甲都被查获。
55,000 reptile skins from India, 19,000 big-eye thresher shark fins in Ecuador and 23 metric tonnes of pangolin in Asia have all been seized.
九岁时，他的父亲，一位在昆士兰海岸开设爬行动物公园的博物学家，教他在夜间跟踪鳄鱼并把它们拖出水面。
At nine, his father, a naturalist who had started a reptile park on the Queensland coast, taught him to stalk crocs at night and lug them out of the water.
其他海龟都不能游到它所能游到的寒冷的北部和南部海域，而且它处理寒冷水域的方式在爬行动物中是独一无二的。
It swims farther into the cold of the northern and southern oceans than any other sea turtle, and it deals with the chilly waters in a way unique among reptiles.
然而，到了20世纪80年代，巴克的论点开始受到质疑，因为许多科学家在各种恐龙的骨骼中发现了与现代爬行动物相似的生长环。
In the 1980's, however, Bakker's contention began to be questioned, as a number of scientists found growth rings in the bones of various dinosaurs that are much like those in modern reptiles.
当这个不速之客搭乘了一艘从墨西哥湾钻井平台发出的潜艇后，这种深海爬行动物吓了石油工人一跳。
This deep sea creepy-crawly gave oil workers a fright, after the unexpected visitor hitched a ride on a submarine sent from a rig in the Gulf of Mexico.
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