纪录片《我们的地球》 第76期 洞穴迷宫(15)

The big-eyes are the equivalent of bats, night feeders that leave the cave each evening.

大眼鲷相当于蝙蝠，它们每天晚上出洞觅食。

And like all cave commuters, they are most vulnerable at the scheduled time of departure.

和所有洞穴动物一样，它们在出发阶段最容易遭受攻击。

A bottle-neck funnels¹ these exiting bats into dense² concentrations, attracting the attention of others.

当大群蝙蝠密集地通过瓶颈出口时，很容易引起其它动物的注意。

The bats can detect the snakes using echolocation,

蝙蝠能利用回声定位觉察到蛇

but the snakes are literally³ in the dark, they can see nothing.

而蛇则完全处于黑暗之中，它们看不见任何东西。

The strikes seem to be largely hit and miss.

这种攻击更像是在碰运气

But the snakes have a secret weapon.

不过蛇也有自己的秘密武器

They can actually sense each bat flying past.

它们实际上能感觉到每一只飞过的蝙蝠

Receptors in the snake's head pick up the heat given off by the flying bats, as this thermal⁴ image shows.

位于头部的“热眼”能觉察到飞行中的蝙蝠散发出的热量，正如这幅热影像所示。

To the snakes, the bats are apparently⁵ glowing and this gives them something to aim at.

每一只蝙蝠在蛇“眼”前都是活灵活现，这也给了它们瞄准目标的机会。

1 funnels   

漏斗( funnel的名词复数 )； （轮船，火车等的）烟囱

参考例句：

• Conventional equipment such as mixing funnels, pumps, solids eductors and the like can be employed. 常用的设备，例如混合漏斗、泵、固体引射器等，都可使用。
• A jet of smoke sprang out of the funnels. 喷射的烟雾从烟囱里冒了出来。

2 dense   

a.密集的，稠密的，浓密的；密度大的

参考例句：

• The general ambushed his troops in the dense woods. 将军把部队埋伏在浓密的树林里。
• The path was completely covered by the dense foliage. 小路被树叶厚厚地盖了一层。

3 literally   

adv.照字面意义，逐字地；确实

参考例句：

• He translated the passage literally.他逐字逐句地翻译这段文字。
• Sometimes she would not sit down till she was literally faint.有时候，她不走到真正要昏厥了，决不肯坐下来。

4 thermal   

adj.热的，由热造成的；保暖的

参考例句：

• They will build another thermal power station.他们要另外建一座热能发电站。
• Volcanic activity has created thermal springs and boiling mud pools.火山活动产生了温泉和沸腾的泥浆池。

5 apparently   

adv.显然地；表面上，似乎

参考例句：

• An apparently blind alley leads suddenly into an open space.山穷水尽，豁然开朗。
• He was apparently much surprised at the news.他对那个消息显然感到十分惊异。