『新东方在线托福口语』为托福考生准备了ETS托福TPO/Official 58 Task 3口语练习：Compound Nesting
Sometimes two different species of inse原文题目答案解析，TPO/Official 58 Task 3口语原文范文音频翻译。

托福TPO/Official 58 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，请听生物学讲座的一段节选。

Narrator: Now listen to part of a lecture in a biology class.

教授：好，我举个例子。非洲有两种不同的蚂蚁物种，它们共住空的树干、分享生存空间。

Professor: Ok. So for example, there are these two different types of ants in Africa that share space in this way. Living inside a hollow tree branch.

其中一种蚂蚁体型很小，另一种则很大。所以它们很不相同。

And one of these types of ants is very small, and the other type is much bigger, so they're different.

有趣的是，大蚂蚁会收集食物、带回树的空洞里吃掉。

And what's interesting is that the bigger ants collect food and bring it back to the hollow tree branch and eat it there.

但有些食物的碎屑就掉在四周了，这些食物的边角料，大蚂蚁是不吃的。

But some of the pieces of food end up scattered around small bits of waste that the bigger ants don't eat.

这时，小蚂蚁就会爬到周围、吃掉这些剩余的食物碎屑。所以小蚂蚁通过吃掉大蚂蚁的食物残渣的方式觅食，它们自己是不用外出找食物的。

And the tiny ants go around and eat these leftover scraps of food. So the tiny ants get their food this way from the scraps left behind by the bigger ants, and they don't have to go out to collect their own food.

科学家们觉得这种安排对大蚂蚁也有好处。

Scientists think that this arrangement works out nicely for the bigger ants too.

因为小蚂蚁吃掉食物碎屑的时候，它们其实也是在把树洞里的生存空间清理干净。

See when the small ants eat up all the little crumbs and scraps left behind, they're actually helping to keep the home inside the tree branch clean.

这种清理树洞内部的方式能抑制有害细菌的生长，而细菌会导致大蚂蚁患病、甚至威胁其生存。

And keeping the inside clean like this prevents harmful bacteria from growing. Bacteria which could cause sickness and threaten the survival of the bigger ants.

Compound Nesting
Sometimes two different species of insects live close together, side by side. The two insect groups might even share the same home. But the two species often are different enough that they do not have to compete for the same resources, and therefore they can avoid conflict. This is known as&nbsp;compound nesting.&nbsp;Compound nesting actually provides advantages to both species, because living closely together can result in a specific benefit to each group, benefits that increase both species’ chances of survival.
<img src="/upload/ti/sardine/2598000-2599000/2598393/d02f268d14a841beb4283617308195cd.png"> &nbsp;
Explain how the example from the professor’s lecture illustrates the concept of compound nesting.