The Force of Water
美音、自然拼读、分级阅读与词汇复习
Introduction Water, Earth’s most important resource, is a mighty force.
地球最重要的资源水是一股强大的力量。
It covers most of Earth and is always at work changing Earth’s surface.
它覆盖了地球的大部分地区,并且始终在改变地表。
Plants, animals, and humans need water to survive.
植物,动物和人类需要水来生存.
So, we have to take care of the water for the good of the Earth.
故取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取取.
Water is found above ground in lakes, ponds, rivers, streams, and oceans.
地上有湖泊、池塘、河流、溪流和海洋等水域。
It is also found below ground, between rocks and sand.
在地下,岩石和沙地之间也发现了这种生物。
This water is called groundwater.
这种水被称为地下水.
The air also holds water as clouds and an invisible gas called water vapor.
空气中还蕴藏着一股云和一种被称为"水蒸汽"的无形气体.
Water on the Move Much of Earth’s water is on the move.
地球大部分的水都在移动中。
Water falls from clouds as rain and snow and drains into streams and rivers.
水从云中落下为雨雪并排入溪流和河流.
The land surrounding streams and rivers is called a watershed.
溪流和河流周围的土地被称作分水岭.
Streams flow into small rivers, and small rivers flow into bigger rivers.
流出入小河流,而小河流入入出较大的河流.
The smaller streams and rivers that flow into bigger rivers are called tributaries.
流入较大河流的小溪和河流称为支流.
Over time, much of the water that flows into streams and rivers reaches the oceans.
随着时间的推移,大量流入溪流和河流的水会到达海洋.
UNITED STATES Water as a Force As water flows in rivers and streams, it picks up dirt, sand, and rocks.
美国 水作为力量 随着河流和溪流中的水流,它会取出泥土,沙子和岩石.
The dirt and sand carried by water are called sediment.
由水所携带的泥土和沙地被称作"沉积物".
Sediment helps water carve away the land.
沉积有助于水分分解出土地.
The Grand Canyon is one of Earth’s largest canyons.
大峡谷是地上最大的峡谷之一.
Over millions of years, it was carved by the fast-moving Colorado River.
在数百万年的时间里,它被快速移动的科罗拉多河所雕刻.
It shows how powerful water can be.
其能显能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出能出
When water slows down, the sediment settles to the bottom of the stream or river.
当水分减慢后,沉积物会沉入溪流或河流下游.
Deposits of sediment form new land, called sandbars and deltas.
沉积物的沉积物形成新的地块,称为沙滩和三角洲.
Large deltas form where big rivers meet oceans.
大三角洲是大河流与海洋相接的地方
Flooding Sometimes massive amounts of rain and snow fall to Earth, causing streams and rivers to spill over their banks.
有时大量降下多雨多雪地倒入地球,使溪流和河流溢出于他们的岸上.
The land around the streams and rivers floods when this happens.
当这种情况发生时,河流和河流周围的土地被洪水淹没。
Flooding can cause lots of damage.
被洪水淹没会造成大量破坏.
When the water recedes to the riverbed, the dirt carried by the floodwater is left on land.
取出后取出取出入河床后取出被取出取出取出取出取出被取出取出取出后取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取出取取出取出取出取出取出取
Over the years, this dirt forms a floodplain.
多年来,这种泥土形成了一个被淹没的平地.
The soil of a floodplain is rich in nutrients from the river.
被洪水淹没的平地的土壤中富含出自河流的营养.
Crops grow well in floodplains, but can be ruined when water floods the area again.
农作物在洪平地生长良好,但水又淹没了该地区时可能会被毁坏.
Water Is Important Rivers and streams have many uses besides carving land.
除了雕刻用地之外,重要的河流和溪流还有许多用途。
People use rivers for swimming, boating, and fishing.
人们使用河流来游泳,划船和捕鱼.
People also have used rivers for thousands of years to transport goods from place to place.
人们还用河流从地到地运输了数千年的货物.
Today, large barges and ships move cargo over rivers.
今天,大型驳船和船只在河流上运输货物.
Lumber companies move logs from forests to mills over rivers.
木材公司将林木从森林转移到河流上方的磨坊.
Dams built on rivers use the force of water to make electricity.
在河流上建造的水坝利用水力发电.
Factories use millions of gallons of water each year to make the things people use.
工厂每年使用上百万加仑的水来制造人们使用的东西.
Farms use water to irrigate crops.
农场用水灌溉农作物.
We use water in our homes to clean and cook.
我们在家中用水来打扫和做饭.
How else do you use water in your home?
不然你在家里怎么用水呢?
Streams and rivers are home to many living things.
溪流和河流是许多活物的家园.
People and other animals depend on streams and rivers for drinking water.
人们和其他动物依靠溪流和河流来取取取饮用水.
Some industries and large cities dump their waste into rivers, and this waste pollutes the water.
一些产业和大城市将废物倒入河流,而这种废物会污染水分.
Polluted water is harmful to humans, plants, and other animals that live in the water or use it to stay alive.
被污染的水会对人类,植物等生活在水中或利用来活命的动物有害.
The World’s Rivers Conclusion The force of water running in rivers and streams changes the shape of the land in many ways.
世界河流的结论 河流和溪流中流出水的力量在许多方面改变了地貌.
Rivers and streams are important to humans, other animals, and plants.
河流和溪流对人类,其他动物和植物都很重要.
Rivers and streams will take care of us as long as we take care of them.
只要我们照顾他们 河河会照顾我们