纪录片《我们的地球》 第213期 无垠深海(05)

As the Sun disappears, a profound change takes place in the ocean.

昼去夜至，海洋发生了另一个重大变化

Deep water plankton¹ start to rise from the depths

深海的浮游生物开始浮上水面，

and another hungry army prepares to receive it.

另一支饥饿的部队准备接受这些猎物

Every night, wherever conditions are right,

如果环境适宜，每天晚上

countless² millions of creatures from the deep migrate to the surface, seeking food.

会有无数的深海生物到海面来觅食。

A baby sailfish³, fifteen centimeters long, snaps up everything in it's path.

一条小旗鱼仅15厘米长，边游边大快朵颐。

In three years' time, it'll be one of the oceans most formidable hunters, weighing sixty kilos.

再过3年，它将重达60公斤，成为海洋中强大的猎手。

Just now, however, it's very vulnerable.

只是现在很弱小罢了。

These manta rays are giants. Eight meters across and weighing over two tons.

这种蝠鲼非常巨大。8米宽,超过2吨重。

The blade-like projections⁴ on either side of the head help to steer⁵ plankton into the manta's mouth.

头部对称的2块刀片状的凸状物帮助蝠鲼把浮游生物送到嘴里。

1 plankton   

n.浮游生物

参考例句：

• Plankton is at the bottom of the marine food chain.浮游生物处于海洋食物链的最底层。
• The plankton in the sea feeds many kinds of animals. 海的浮游生物成为很多种动物的食物。

2 countless   

adj.无数的，多得不计其数的

参考例句：

• In the war countless innocent people lost their lives.在这场战争中无数无辜的人丧失了性命。
• I've told you countless times.我已经告诉你无数遍了。

3 sailfish   

n.旗鱼，姥鲛

参考例句：

• The state offers a huge variety of fish,from largemouth bass to sailfish.这里出产非常多种鱼类，从阔嘴黑鲈到旗鱼等不一而足。
• A fine start to the day,and my first sailfish on a fly.这一天的开局不错，这也是我第一次用飞杆钓到旗鱼。

4 projections   

预测( projection的名词复数 )； 投影； 投掷； 突起物

参考例句：

• Their sales projections are a total thumbsuck. 他们的销售量预测纯属估计。
• The council has revised its projections of funding requirements upwards. 地方议会调高了对资金需求的预测。

5 steer   

vt.驾驶，为…操舵；引导；vi.驾驶

参考例句：

• If you push the car, I'll steer it.如果你来推车，我就来驾车。
• It's no use trying to steer the boy into a course of action that suits you.想说服这孩子按你的方式行事是徒劳的。