英语听力：自然百科 大堡礁 堡礁内外(15)

（单词翻译）

And extremely cold.

极端的寒冷。

At four degrees, it's the same temperature as the sea in the Antarctic.

只有四摄氏度和南极洲海水同样的温度。

The ROV reaches a depth of 800 metres,not quite at the bottom, but not far off.

水下机器人到达了800米深处，虽然还不算到达底部，但也差不远了

A pile of coral sand at the base of the reef wall slopes gently into the abyss,and here we find signs of real deep-sea creatures.

在珊瑚礁墙的底部有一堆沙子缓缓的倾斜到深渊里，这里我们发现了一个深海生物的信号。

Some, like this sea anemone¹, are familiar.

有点像我们熟悉的海葵。

Others are less well known, like this chambered nautilus.

其他的知名度比较差，比如这个鹦鹉螺。

It's an ancient relative of octopus² and squid,a living fossil, the last survivor³ of a group of animals that dominated the world's oceans 500,000,000 years ago.

它是章鱼和乌贼的远古近亲，它是一个活化石，是500,000,000年前统治海洋那些动物的最后的幸存者。

It moves around by jet propulsion,squirting water backwards⁴, in order to go forwards.

它通过喷射前进，向后喷水来获得前进的力量。

At night, it's the nautilus's turn to migrate.

晚上是鹦鹉螺定期活动的时候。

It swims up towards the surface to feed on shrimps⁵ beside the reef wall,returning back down during the day.

它向海面游去捕食珊瑚礁墙附近的虾然后在白天返回。

This is a baby nautilus,the first time one's been filmed in the wild.

这是一只小鹦鹉螺，它是第一次在野外被拍摄到。

It's no bigger than a two-pound coin,yet it makes the same daily up and down journey as its plate-sized parents.

它还没有一个两英镑的硬币大，但是它每天也要上去然后下来和它那盘子大小的父母一样。