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【托福听力4营】听写日志1-4水资源

2011-04-29 15:48 小马过河 admin

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摘要:中文 在我想在这里讨论一些其他的东西,一些关于我们如何管理资源。让我们提一些东西,我的意思是,如果我们取得资源像水这一类的,我们要提到一些特别的,回顾一些普通的事物

中文

在我想在这里讨论一些其他的东西,一些关于我们如何管理资源。让我们提一些东西,我的意思是,如果我们取得资源像水这一类的,我们要提到一些特别的,回顾一些普通的事物,要特别谈谈关于地下水。所以水文地质学家学家想要指出我们能从地下提取多少水?这是一个很有价值的问题,让我来问问你,有多少的水,是你能够想到的,能够从地下蓄水层中提取出来?
和可回灌的一样多?
所以我们不能取得比水自然进入地下的多。你说的意s思是如果你取得的水和进入蓄水层的一样的多。你不就不会用尽所有储存在地下的水,对吗?不是,但这是一个原则,这取决于我们如何利用水资源。这叫做安全出水率。这个方法是说你所能从系统中抽取的水和自然回灌一样多,自然能流回的水是一样多呢。所以只是安全出水量的原则---在我们抽取的水和能够再填回的水中找一个平衡。但是基于这种原则的做法,而这种做法忽略了水也会自然流出。在一个自然的系统中,有些水会再次返回,有些水会通过喷泉,小溪,湖泊溜走,在很长一段时间内,蓄水层的水量几乎不会改变。这就是平衡。现在,人类介入其中。开始将水从系统中取出。我们是怎么改变这个等式的?
这就不是一个平衡了吗?
是的,我们将水取出,水也会自然流出,但是水的回灌率没有改变。所以结果是我们将储存在地层系统中的水量减少。如果你们这样做很长一段时间,如果你们抽水的量和自然进入地下的水样,那么地下系统的水位线就会下降。但水位线下降,这将影响到表层水。怎样影响?在地下水系统这是流出点----这个位置是水从地下系统流出的,脱离河流和小溪。水线的下降让我们知道流出点有一天也会干涸。这个点意味着水能否从湖泊和小溪中流出就依赖这个点。所以以有一天我们会以减少地表水为结束。在A州,我们管理水资源依赖于安全出水量这一原则。通过这个方法我们见见将蓄水层系统中的流出点弄干涸。为什么这个这么重要呢?你们中有人想在这个地方生存一段时间吗,或是让你孩子在这里长大,或是让你孩子的孩子在那里?你想过在A州采取一个可持续的管理水的放马吗,可持续是这里的关键点。我们不能以未来为代价取得资源。我希望你明白持续发展和安全产水量是两个互不相容的概念。持续发展的意思是指对所有的系统包括人们使用的水及那些属于湖泊和小溪的可供己的水。我要重复一遍。当你使用安全产水量,如果我们只平衡我们对水的取用和反水量,但别忘了还有水的自然流出。之后地下水量慢慢减少。还会引发另外一个问题,这个反映在水位---水能流向湖泊小溪的水位,他会渐渐干涸。

英文

So I want to discuss a few other things here,actually some ,some ideas about how we manage our

resources.Let us talk about what that mean,if we take resource like water,maybe we should get mare

spcific,bake up a more general case and talk about undergroud river particularly.So hydrogeologist tried to

figure out how much can you take out from underground sources.It's a important question.Let me ask you

guys,how much water based on you know so far,could you take out of say that aquifer,under the city.
As much as would get recharge.So we wouldn't take out any more than naturally comes into it water.The implication is that well if you only take as much out as come in.You're not gonna to deplete the mount of water that stored in there right?Wrong,but it's the principle.That's the idea behind how we manage the water supplies call self yield.Basically what this method says is we can pump water out of a system as much naturally recharges,as naturaly flows back in.So this principle of self yield is based on banlance on what we take out with what get recharged.But waht it does is know how much water naturaly comes out of system, In a nature system, a certain of matter recharge come in and a certain matter of water naturally flows out through springs ,lakes,and streams and over long term the amount of water that is stored in the aqurifer doesn't really change much.It's balanced.Now hunman's coming in and start taking water out of system.How have we change the equation?
It's not balance any more.
Right.We take water out,and water also naturally flows out.But recharge doesn't change.So the result is we

reduced the water that stores underground system.If we keep do that long enough,if we pump much water out as aqurifer come in,gradually the underground water level drop.That when that happens,that can affect the surface water.Well the underground system has a nature discharge point--places where the water flows out of the underground system,out to lakes and streams.Well a drop water level can means konw the discharge point

eventually dry up.Let's means that water is not getting to the lakes and streams depend on it and we reduced

the surface water supply ,too.You know in the state of A where they manage the water with the principle of self

yield,under this method they dry up the discharge points of aquifer system.Now why is the issue?Well any of you want to live in the state for a while?Want your kids grow up here?Your kids kids?You may concerned with does A have a water system which is sustainable---key word here?What does means?Well geologists definition of sustainable is enough in the needs of present without compromsing the ablity of the future to have availability to have same resources.Let hope you say two ideas are incomposing---sustainability and self yield.Because what sustainbility means that sustainable for all systems depend water.For the people use it,and for...for supply water to dependly the system.So I will repeat this.if we are using the self yield method,if we are only balancing what we take out with what we get recharged,but don't forget water also flows out naturely. Thenthe amount stored underground is gonna gradually get reduced, and that’s gonna to lead to anotherproblem: these discharge points,where the water flows out to the lakes and stream,they’re gonna dry up. Ok.

 

改正

So I want to discuss a few other terms here,actually some ,some ideas about how we manage our resources.Let us talk about what that mean,if we take resource like water,maybe we should get a little bit more spcific,bake up from more general case and talk about undergroud river particularly.So hydrogeologist have tried to figure out how much can we take out from underground sources.That has been a important question.Let me ask you guys,how much water based on what you know so far,could you take out of say that arqufiy,under the city.
As much as would get recharge.
So we wouldn't want to take out any more than naturally comes into it.The implication is that well if you only take as much out as come in.You're not gonna to deplete the mount of water that stored in there right?Wrong,but it's the principle.That's the idea behind how we manage the water supplies.It's called self yield.Basically what this method says is you can pump as much water out of a system as much naturlaly recharges,as naturaly flows back in.So this principle of self yield,it is based on banlancing on what we take out with what gets recharged.But waht it does is ,it ignores how much water naturaly comes out of system, In a nature system, a certain matter of recharge come in and a certain of matter water naturelly flows out through springs ,lakes,and streams and over long term the amount of water that is stored in the aqurifer doesn't really change much.It's balanced.Now hunman's coming in and start taking water out of system.How have we change the equation?
It's not balance any more.
Right.We take water out,but water also naturally flows out.But recharge rate doesn't change.So the result is we've reduced the amount of water that stores underground system.If we keep doing that long enough,if we pump as much water out as aqurifier come in,gradually the underground water levels drop.That when that happens,that can affect the surface water.How?Well in the underground system there are nature discharge points--places where the water flows out of the underground system,out of lakes and streams.Well a drop in the water level can mean those discharge points will eventually dry up.Let's means that water is not getting to the lakes and streams that depend on it and we've ended up reducing the surface water supply ,too.You know in the state of A ,we're managing some major water supplies with the principle of self yield,under this method that will eventually dry up the natural discharge points of aquifer system.Now why is the issue?Well aren't some of you want to live in the state for a while?Want your kids grow up here?Your kids kids?You may concerned with does A have a water system which is sustainable---key word here?What does means?Well the general definition of sustainable is there be enough to meet the needs of present without compromsing the ablity of the future to have availability to have same resources.I hope you see that two ideas are incompatible---sustainability and self yield.Because what sustainbility means is that sustainable for all systems dependent on water.For the people use it,and for...for suppling water to dependent like the lakes and streams.So I will repeat this.So if we are using the self yield method,if we are only balancing what we take out with what we get recharged,but don't forget water also flows out naturely. Thenthe amount stored underground is gonna gradually get reduced, and that’s gonna to lead to anotherproblem: these discharge points,where the water flows out to the lakes and stream,they’re gonna dry up. Ok.



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