『新东方在线托福口语』为托福考生准备了ETS托福TPO/Official 27 Task 3口语练习：Swarm Intelligence &nbsp;
Some insect species live in原文题目答案解析，TPO/Official 27 Task 3口语原文范文音频翻译。

托福TPO/Official 27 Task 3口语原文独立/综合口语题目答案解析-范文音频翻译-新东方托福官方网校手机版

旁白：现在在生物课上听一场关于这个话题的讲座。

Narrator: Now listen to a lecture on this topic in a Biology class.

教授：好的，我们可以在蚂蚁身上看到一个很好的例子。

Professor: OK, we can see a great example of this with ants.

蚂蚁生活在被称为蚁群的大种群中。

Ants live in large groups called colonies.

它们通常会一起行动来获取食物来源。

They normally move together to get to food sources.

And sometimes when ants are moving toward a food source,

they'll encounter or find an obstacle in their path.

假设有一大群蚂蚁在树枝上行走，向另一根树枝上的食物走去。

let's say a large number of ants are walking on a tree toward some food on a branch.

但是当它们走到树枝的末端时，

But when they reach the end of the branch they're walking on,

这个树枝和下一根有食物的树枝之间有很大的空间。

there's a wide space between that branch and the next one, the branch with the food on it.

没有任何一只蚂蚁可以单独穿过这个大空隙，去到另一个有食物的树枝上。

Now none of these ants alone can cross this wide space to get to the other branch with the food.

那么，它们是如何解决这个问题的呢？

一只蚂蚁向前走，直到它到达树枝的末端，

One ant walks forward until it reaches the end of the branch,

然后它会自动地将后腿固定在树枝上。

and then it automatically holds on to the branch with its back legs.

Then it stretches its body forward into the open space.

这对蚂蚁来说是很自然的，这是一个简单的动作。

Now this comes naturally to ants, and it's a simple action.

然后，下一个蚂蚁走到树枝的末端，爬上第一只蚂蚁的身体。

So then the next ant walks to the end of the branch and ride across the first ant's body.

然后它将身体伸展到空隙的方向，

and then it stretches its body out into the open space,

just a little bit closer to the branch with the food on it.

其他蚂蚁也会做同样的事情，直到有足够多的蚂蚁连接在一起，在两个树枝之间形成一座桥。

other ants do the same thing until enough ants connect together to form a bridge between the two branches.

从而方便蚁群里的其他蚂蚁爬过蚂蚁桥，到达食物处。

allowing the rest of the ants in the group to cross over this bridge of ants to reach the food.

Swarm Intelligence &nbsp;
Some insect species live in large groups, or “swarms.” Such swarms typically include several thousand individual insects. Living in swarms allows these insects to accomplish complex tasks together through complex behaviors. The behavior of the insects as a group demonstrates greater level of complexity than the behavior of individual group members. This complex group behavior is called swarm intelligence. With swarm intelligence, each insect performs a simple instinctual behavior that is repeated by other individual that results in a complex behavior. Insect swarms are able to accomplish tasks that individual insects would not be able to achieve.
 
<img src="/upload/ti/2427000-2428000/2427021/44e11d98087b4768b65cf7634d95a6ec.jpg">
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Explain how the example from the lecture illustrates the concept of swarm intelligence.