-
(单词翻译:双击或拖选)
Rivers: what do they mean to you? Are they just something boring you learn about in geography at school? For many people the answer is probably yes, but anyone who has ever lived beside one and gone for walks along its bank, swum in it, gone fishing, taken a boat or just looked down on it from a bridge, knows differently. Rivers are magic. Wouldn't you so much prefer to be right now gazing out over one instead of looking at your computer screen?
Take the names. Say each out loud, roll it round your tongue, listen to the sound of it and let your mind conjure1 up what it will. The Seine, the Rio Grande, the Tigris, the Mekong.... What images do they evoke2? What legends and mystery? What promise of romance and adventure? How have they inspired our literature?
What do you know about the quest for the source of the Nile? Who was David Livingstone? Close your eyes and picture feluccas, temples and pyramids. Baby Moses in the bulrushes. Imagine yourself on a paddle steamer on The Mississippi, sailing down to New Orleans and the Gulf4 of Mexico with jazz and blues5 and slavery in the air. Wave as you pass Huckleberry Finn fishing on a sandbank. Lean over the rail and watch the wake glittering…
Moon River, wider than a mile
I’m crossing you in style some day
Wherever you’re going I’m going your way……**
Shoot up to space and look down at The Amazon snaking through the jungle. Zoom7 back in close up to see freshwater dolphins, piranhas, and anacondas. Then switch over to the Congo. Not the longest but the largest river in Africa. Navigable from Kinshasa to Kisangani, the only link between these two cities, often severed8 because of war. Recently river traffic has resumed but for how long? Surrounded by green gloom, pygmies and forest elephants, habitats supporting the greatest diversity of life on the planet. And the inevitable9 waterway to the Heart of Darkness.
What images! And what despair at the apparently10 unstoppable destruction of it all!
The analogy of streams, rivers and their tributaries11 as the veins12 and arteries13 of the earth is not inappropriate. They are indeed the "lifeblood" of the world. Each river is part of a huge eco system. Major ones have catchment areas the size of half a continent. They are the natural habitat of zillions of animals, fish, insects, birds, plants and bacteria. Plus of course the greatest enemy to all of these - us.
Nearly every river in the world is under threat from humans. Rivers in Europe, Asia and North America are polluted and support very little life, though some admittedly have been cleaned up a bit. Salmon14 are now seen once again in the Thames, which not so long ago was basically London's great sewer15 to the sea.
In Africa, much of Asia and South America the greatest threat to rivers is deforestation. Vegetation acts like a sponge. It absorbs the rain and lets it out drop by drop. This either permeates16 the earth to form valuable underground reservoirs, or trickles17 down to form streams that merge18 into rivers. When people cut down trees you can imagine what happens. The entire catchment area turns into a desert and the river literally19 dries up and disappears. When rain does occasionally fall it briefly20 resumes its existence as the water rushes in a great flood back down to the sea, carrying with it huge amounts of top soil and causing severe erosion, benefiting no one.
Thus, to take just one example, cutting trees in mountainous Nepal kills people in low-lying Bangladesh on a regular basis.
When a river dies so does the entire eco system. Plants, fish, birds and animals, even people lose their habitat and disappear. It is a disaster on an unimaginable scale, comparable to the worst nuclear war. The Sabi River in Zimbabwe (Rio Save in Mozambique) was once so wide and uncrossable all year round that a huge bridge, it was decided21, was needed. The engineer who designed Sydney Harbour Bridge in Australia was engaged and the result was an almost identical steel suspension bridge, very impressive in the middle of Africa. Birchenough Bridge now spans a wide sandy waterless riverbed. It looks like its famous twin plonked in the middle of the Sahara. A paradise teeming22 with hippos and crocodiles has vanished. All that is left are poverty stricken people and goats.
Imagine if all the money spent on weapons, new airports, football stadiums, motorways23 and presidents’ palaces was redirected to helping24 people like that manage their resources properly! But no - we remain hell bent25 on self-destruction, which we call "development".
We have known for years that the problems large dams cause far outweigh26 the advantages. Dams may provide a good source of hydroelectric power but the damage they do to the ecosystem27 of the river is immeasurable. The Aswan Dam on the Nile is a good example. Before it was built the Nile regularly flooded, depositing rich silt28 along its banks, which then provided fertile soil for agriculture when it subsided29. Now, because of the dam, the water level is controlled all year round and this does not happen. People resort to artificial fertilisers for their crops. These in turn get back into the river and pollute it. Before the dam was built there was a flourishing sardine30 industry in the Nile Delta31, where it flows into the Mediterranean32. The sardines33 fed on all the rich food brought down by the river. Now that industry no longer exists, along with the sardines and all the other marine34 life that once thrived there. And there are similar cases all over the world.
Local people are always the ones with the most to lose, and the least power to do anything about these enormous projects. When the Kariba dam was built in the 1950's the Batonka, who lived along the Zambesi, were moved to a dry, barren place where they had to change from being fishermen to farmers. They lost their entire livelihood35, way of life and culture and have virtually ceased to exist as a tribe. Their descendants however still remember the terrible curse that Nyaminyami the River God put on the dam. And they wait for the day when Nyaminyami will rise again to destroy it, causing an earthquake and a flood of biblical proportions, wiping out the whole of modern Zimbabwe (and poor Mozambique which has the misfortune to lie downstream).
Rivers can unite or divide people and countries in many ways, and there are often severe tensions between countries which share a river. When the Ataturk Dam was built on the Euphrates in Turkey it immediately raised fears downstream in Syria and Iraq for their water supply. Similar tensions exist between Egypt, Sudan and Ethiopia over the Nile and politicians shamelessly exploit the situation for their own purposes. Yet these countries have to co-operate or die. There are predictions of wars over water in the future. That may very well happen, but even the winners of those wars will be losers when the water they have fought so hard over dries up completely.
Water is life. We need to think about every drop we use, and the consequences of every single thing we do that may endanger it. Do you really have to use detergent36 to wash your clothes? Ordinary biodegradable soap may not make your shirts really white but they will be perfectly37 clean. Just not dazzling white. Can't you wear some other colour? The state of our rivers reflects not only the state of our entire planet but the state of our states of mind. If rivers are sick it is because we are mentally so.
* quote from Rudyard Kipling's Just So Stories.
点击收听单词发音
1 conjure | |
v.恳求,祈求;变魔术,变戏法 | |
参考例句: |
|
|
2 evoke | |
vt.唤起,引起,使人想起 | |
参考例句: |
|
|
3 greasy | |
adj. 多脂的,油脂的 | |
参考例句: |
|
|
4 gulf | |
n.海湾;深渊,鸿沟;分歧,隔阂 | |
参考例句: |
|
|
5 blues | |
n.抑郁,沮丧;布鲁斯音乐 | |
参考例句: |
|
|
6 maker | |
n.制造者,制造商 | |
参考例句: |
|
|
7 zoom | |
n.急速上升;v.突然扩大,急速上升 | |
参考例句: |
|
|
8 severed | |
v.切断,断绝( sever的过去式和过去分词 );断,裂 | |
参考例句: |
|
|
9 inevitable | |
adj.不可避免的,必然发生的 | |
参考例句: |
|
|
10 apparently | |
adv.显然地;表面上,似乎 | |
参考例句: |
|
|
11 tributaries | |
n. 支流 | |
参考例句: |
|
|
12 veins | |
n.纹理;矿脉( vein的名词复数 );静脉;叶脉;纹理 | |
参考例句: |
|
|
13 arteries | |
n.动脉( artery的名词复数 );干线,要道 | |
参考例句: |
|
|
14 salmon | |
n.鲑,大马哈鱼,橙红色的 | |
参考例句: |
|
|
15 sewer | |
n.排水沟,下水道 | |
参考例句: |
|
|
16 permeates | |
弥漫( permeate的第三人称单数 ); 遍布; 渗入; 渗透 | |
参考例句: |
|
|
17 trickles | |
n.细流( trickle的名词复数 );稀稀疏疏缓慢来往的东西v.滴( trickle的第三人称单数 );淌;使)慢慢走;缓慢移动 | |
参考例句: |
|
|
18 merge | |
v.(使)结合,(使)合并,(使)合为一体 | |
参考例句: |
|
|
19 literally | |
adv.照字面意义,逐字地;确实 | |
参考例句: |
|
|
20 briefly | |
adv.简单地,简短地 | |
参考例句: |
|
|
21 decided | |
adj.决定了的,坚决的;明显的,明确的 | |
参考例句: |
|
|
22 teeming | |
adj.丰富的v.充满( teem的现在分词 );到处都是;(指水、雨等)暴降;倾注 | |
参考例句: |
|
|
23 motorways | |
n.高速公路( motorway的名词复数 ) | |
参考例句: |
|
|
24 helping | |
n.食物的一份&adj.帮助人的,辅助的 | |
参考例句: |
|
|
25 bent | |
n.爱好,癖好;adj.弯的;决心的,一心的 | |
参考例句: |
|
|
26 outweigh | |
vt.比...更重,...更重要 | |
参考例句: |
|
|
27 ecosystem | |
n.生态系统 | |
参考例句: |
|
|
28 silt | |
n.淤泥,淤沙,粉砂层,泥沙层;vt.使淤塞;vi.被淤塞 | |
参考例句: |
|
|
29 subsided | |
v.(土地)下陷(因在地下采矿)( subside的过去式和过去分词 );减弱;下降至较低或正常水平;一下子坐在椅子等上 | |
参考例句: |
|
|
30 sardine | |
n.[C]沙丁鱼 | |
参考例句: |
|
|
31 delta | |
n.(流的)角洲 | |
参考例句: |
|
|
32 Mediterranean | |
adj.地中海的;地中海沿岸的 | |
参考例句: |
|
|
33 sardines | |
n. 沙丁鱼 | |
参考例句: |
|
|
34 marine | |
adj.海的;海生的;航海的;海事的;n.水兵 | |
参考例句: |
|
|
35 livelihood | |
n.生计,谋生之道 | |
参考例句: |
|
|
36 detergent | |
n.洗涤剂;adj.有洗净力的 | |
参考例句: |
|
|
37 perfectly | |
adv.完美地,无可非议地,彻底地 | |
参考例句: |
|
|
38 lyrics | |
n.歌词 | |
参考例句: |
|
|