『新东方在线托福口语』为托福考生准备了ETS托福TPO/Official 45 Task 4口语练习：<img src="/upload/image/1516860400659.jpg">
<br>&nbsp; 
<br>Using the examples of the electric eel a原文题目答案解析，TPO/Official 45 Task 4口语原文范文音频翻译。

托福TPO/Official 45 Task 4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：听一段海洋生物课上讲座的一部分。

Narrator: Listen to part of a lecture in a Marine Biology class.

教授：我们已经讨论了一些关于鱼类如何使用视觉，触觉等感官。

Professor: So we've talked a little about how fish use senses like vision, touch and so forth.

但是我现在想说的是一些鱼的特殊能力，

But what I wanna talk about now is a special ability some fish have,

在他们的身体里产生电的能力。

the ability to produce electricity in their bodies.

You're probably familiar with these fish,

这些鱼会自然地从他们的身体发出电流。

these fish that send out electric currents from their bodies naturally.

它可以在帮助鱼类生存方面发挥重要作用。

it can serve some important roles in helping fish survive.

首先，鱼和所有动物一样，需要食物才能生存。

First, fish, like all animals, need food to survive.

嗯，产生电的能力帮助一些鱼类捕捉猎物，

Well, the ability to produce electricity helps some fish to capture prey,

你知道，比如能够捕捉水里的其他生物。

you know, other organisms in the water that they eat.

the eel produces a strong electric current in its body.

当鳗鱼接触到一种可以在作为食物的较小的鱼，

When the eel comes into contact with one of the smaller fish it depends on for food,

它发出的电流击中小鱼，使它瘫痪。

the electric current that it sends out shocks the smaller fish and paralyzes it.

鳗鱼很容易捕捉到鱼，并能悠闲地吃掉它们。

The eel captures the fish easily and can eat it at its leisure.

所以这种利用电流捕捉猎物的能力可以确保鳗鱼获得生存所需的食物。

So this ability to use electricity to capture prey ensures that the eel gets the food it needs to survive.

产生电的能力还可以帮助鱼类通过探测附近的物体，来为它们导航。

The ability to produce electricity also helps fish to successfully navigate their environment by detecting nearby objects.

他们生活的水可能是泥泞和黑暗的。

and the water they live in can be muddy and dark.

有一种叫做刀鱼的鱼能产生电力。

Now there's a fish called the knifefish that produces electricity.

这就形成了一个围绕着刀鱼身体的电场，

This creates an electric field around the knifefish's body,

当刀鱼游近，比如说一块石头时，

when the knifefish swims close to, say a rock,

它能感知到它的电场的扰动和干扰。

it senses a disturbance and interference in its electric field.

然后鱼就会意识到附近有一块石头，它必须避免撞到它。

The fish then realizes that there is a rock nearby and that it has to avoid crashing into it.

刀鱼游离岩石，从而避免了自身受伤。

the knifefish swims away from the rock and thus avoids harming itself.

<img src="/upload/image/1516860400659.jpg">
<br>&nbsp; 
<br>Using the examples of the electric eel and the knife fish, explain how producing electricity benefits certain fish.