纪录片《侏罗纪之谜》 第22期 理论中的缺陷

But some scientists had spotted¹ a flaw in the climate change theory.

可是有些科学家却指出了气候变迁理论中的缺陷

Even if the climate had changed, it didn't follow that all the dinosaurs² had to change as well.

即使气候发生变化，那也不能说明恐龙必须发生改变

Climate is an important factor and it's one which obviously affected³ the dinosaurs in the middle Jurassic,

气候是一个重要因素，它显然影响了中侏罗世的恐龙

but it is not a single factor that could have done it alone,

但是光凭一个因素并不能达到这类结果

for the simple reason dinosaurs, if the climate changed became terrible, they would up sticks and move.

原因很简单，如果气候对恐龙来说变得相当恶劣，它们就会动身迁徙

If the dinosaurs could move

如果恐龙可以迁徙

they could simply go wherever they wanted to find the climate and vegetation they liked best.

那么它们就能走到任何地方，去寻找它们最喜欢的气候和植被

On its own climate change wasn't enough to explain the transformation⁴ of the dinosaurs in the mid-Jurassic.

就这点而言，气候变化并不足以解释中侏罗世恐龙的转变

For climate change to have become a major evolutionary⁵ force, it needed something else, a physical barrier.

气候变化若想成为强大的进化动力，它还需要别的东西，自然屏障。

If the dinosaurs were forced to stay put, they would have to evolve to suit the changed conditions, or die.

如果恐龙被迫滞留，它们就必须进化以适应环境变化，否则就会灭绝

Movement is the key 'cos if you actually do break the movement across the continent

迁徙是关键，如果阻断大陆间的迁徙过程

you bring up a barrier, whether it be waters or mountains,

设置屏障，不管是水还是山脉

and you actually restrict that group and the climate does continue to change.

那就能限定这块地界，气候也能继续改变

That's when you will start affecting these populations of animals.

那时对动物群落的影响才真正开始。

1 spotted   

adj.有斑点的，斑纹的，弄污了的

参考例句：

• The milkman selected the spotted cows,from among a herd of two hundred.牛奶商从一群200头牛中选出有斑点的牛。
• Sam's shop stocks short spotted socks.山姆的商店屯积了有斑点的短袜。

2 dinosaurs   

n.恐龙( dinosaur的名词复数 )；守旧落伍的人，过时落后的东西

参考例句：

• The brontosaurus was one of the largest of all dinosaurs. 雷龙是所有恐龙中最大的一种。 来自《简明英汉词典》
• Dinosaurs have been extinct for millions of years. 恐龙绝种已有几百万年了。 来自《简明英汉词典》

3 affected   

adj.不自然的，假装的

参考例句：

• She showed an affected interest in our subject.她假装对我们的课题感到兴趣。
• His manners are affected.他的态度不自然。

4 transformation   

n.变化；改造；转变

参考例句：

• Going to college brought about a dramatic transformation in her outlook.上大学使她的观念发生了巨大的变化。
• He was struggling to make the transformation from single man to responsible husband.他正在努力使自己由单身汉变为可靠的丈夫。

5 evolutionary   

adj.进化的；演化的，演变的；[生]进化论的

参考例句：

• Life has its own evolutionary process.生命有其自身的进化过程。
• These are fascinating questions to be resolved by the evolutionary studies of plants.这些十分吸引人的问题将在研究植物进化过程中得以解决。