地球的力量

It's called the great ocean conveyor and it's one of the most powerful forces on the planet.

它被称为是大洋输送带 它是地球上最大的能量之一

It's made up of warm currents which travel at the surface

它由表面流动的温暖洋流

whilst at the bottom of the ocean are much colder currents.

和海洋底部较冷的洋流组成

The conveyor transports oxygen, nutrients and warmth around the world.

输送带连接了整个地球它将氧气养分和热量运输到世界各地

It's vital to the health of all life on Earth.

它是地球所有生命赖以生存的关键

Vet the conveyor wouldn't keep flowing

但是如果没有寒冷的北边海洋

if it wasn't for what happens in the cold northern oceans.

输送带就会中止流动

This is where the surface water sinks to join the deep water currents.

在那里表面水体下沉与深海洋流混合

The sinking happens because the water's very cold.

下沉是因为水很冷

This makes it dense and heavy,so it plunges to the bottom of the ocean.

所以密度增加，重量加重 所以它就会沉入海底

And it's this sinking water which keeps the entire conveyor moving.

就是这些下沉的水维持着整个输送带

As ft travels south, ft hugs the ocean floor,until it warms at the equator,

在全世界流动 它向东流，深入海床知道在热带温度增加后

where it eventually rises to complete the circuit.

它又上升完成循环

重点讲解

1、make up

组成;构成

North Africans make up the largest and poorest immigrant group in the country.

北非人构成了该国最大的、也是最贫困的移民群。

Women officers make up 13 per cent of the police force.

女警占警力的13%。

编造;虚构

I think it's very unkind of you to make up stories about him.

我认为你编造他的谣言很不厚道。

I'm not making it up. The character exists in real life.

我没有凭空捏造，这种人现实生活中确实存在。

（给…）化妆;（为…）打扮

She spent too much time making herself up.

她在化妆上花去了太多时间。

She chose Maggie to make her up for her engagement photographs.

她选择玛吉为她拍订婚照的时候化妆。

凑足;补齐

Less than half of the money that students receive is in the form of grants, and loans have made up the difference.

学生领到的钱有不到一半是助学金，差额部分由贷款补足。

The team had six professionals and made the number up with five amateurs.

该队有6名职业运动员和凑数的5名业余运动员。

2、plunge

（尤指向水中）纵身投入，一头进入

At least 50 people died when a bus plunged into a river.

一辆公共汽车栽进河里，造成至少50人丧生。

He ran down the steps to the pool terrace and plunged in.

他跑下台阶来到泳池露台，纵身跳进池里。

将…投入；将…插入；将…刺进

A soldier plunged a bayonet into his body.

一名士兵将刺刀插进了他的身体。

She plunged her face into a bowl of cold water.

她把脸扎进一盆凉水里。

（使）投身；（使）突然开始从事

The two men plunged into discussion.

两位男士立即投入到讨论中。

The prince should be plunged into work.

王子应该积极参与工作。