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托福TPO-33 Lecture 2(上)

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Listen to part of a lecture in an environmental science class.

听一段环境科学课程。

Professor: I'd like to continue with the topic of managing water resources, but I want to focus on a particular case.

教授:我想继续管理水资源的话题,但是我想专注于一个特定的情况。

Uh, um, an example of water management that's made us reconsider the methods we use when we make these decisions.

在我们做决定时,有一个水管理的例子让我们考虑我们所用的方式。

So let's look at what's happening in the Colorado River basin.

所以让我们看看在科罗拉多河流域发生的事。

The Colorado River basin is a region in the Southwest United States.

科罗拉多河流域是美国西南部的一个地方。

Seven states rely on the Colorado's water.

有七个州依赖着科罗拉多的水资源。

科罗拉多河流域.jpg

And as you can imagine, as the populations of these states began to grow, it became clear that a system to distribute, uh, to make sure each state got its fair share of water...some kind of system had to be created.

正如你所想,随着这些州的人口开始增长,很明显为了确保每个州的水资源得到公平分配,就需要建造某种分配系统。

And in 1922, a water-sharing agreement was made. Elizabeth, you have a question?

在1922年达成了一项水资源分享协议。伊丽莎白,你有问题吗?

Student: Well, how exactly do you figure out how to share a river?

学生:你认为该如何确切地计算出怎样分享一条河流呢?

I mean, you can't...like cut it up into pieces.

我的意思是你不能把它切成碎片。

Professor: Well, let's start with the first step.

让我们从第一步开始。

And that's trying to figure out how much water on average flows through the river each year.

那就是试图计算出每年该河流的平均流量是多少。

Now, researchers had started gathering data on water flow back in the late 1890s using instruments they placed in the river.

研究者们开始从19世纪90年代末用他们放在水中的工具收集水流数据。

When the 1922 water-sharing agreement was made, there were about twenty years of data on water flow available.

当1922年水资源分享协议达成时,那里已经有约20年的关于水流的可用数据。

The average annual flow was calculated.

年平均流量已经算出。

And, well, the agreement was based on that calculation.

而且这项协议是以这个计算为基础的。

The same basic agreement is in effect today.

同样的基本协议在今天一样有效。

Student: Wait! That was all the data they had?

等等!这就是他们所有的数据吗?

And they based their decision on that?

而且他们的决定就基于这个?

Professor: Yes. And we'll why that was a bad decision in a moment.

是的。我们马上就能看到为什么这是一个错误的决定。

OK. As decades passed, it became clear that measuring river flow was much more complicated than we had thought.

好的。当数十年过去后,很明显测量河水流量要比我们想象的复杂得多。

See...a river has periods of low flow and periods of high flow.

你看,一条河有低流量期和高流量期。

And this wasn't taken into consideration when the 1922 agreement was made.

在1922年协议达成时并没有把它考虑在内。

In the 1970s, the population of the area was rising while the amount of water flowing through the river seemed to be falling.

在20世纪70年代,该地区的人口上涨了,而该河流的水流量似乎下降了。

By this time, we had...what?

到这时我们已经有了什么?

A hundred years of recorded data to look at?

100年的记录数据可以查看?

That's still a pretty short time for an ancient river.

这对于一条古老的河流来说,时间还是太短了。

To get more data, we looked at a different source—a source that was able to tell us about hundreds of years of the river's history—tree rings.

为了获取更多的数据,我们察看了不同的来源,一个可以帮助我们了解河流数百年历史的来源——树的年轮。

重点单词   查看全部解释    
source [sɔ:s]

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n. 发源地,来源,原始资料

 
distribute [di'stribjut]

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v. 分配,散布

联想记忆
figure ['figə]

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n. 图形,数字,形状; 人物,外形,体型
v

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consideration [kənsidə'reiʃən]

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n. 考虑,体贴,考虑因素,敬重,意见

 
reconsider [.ri:kən'sidə]

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v. 重新考虑,再斟酌

 
particular [pə'tikjulə]

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adj. 特殊的,特别的,特定的,挑剔的
n.

联想记忆
flowing ['fləuiŋ]

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adj. 流动的;平滑的;上涨的 v. 流动;起源;上涨

 
available [ə'veiləbl]

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adj. 可用的,可得到的,有用的,有效的

联想记忆
complicated ['kɔmplikeitid]

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adj. 复杂的,难懂的
动词complica

 
calculation [.kælkju'leiʃən]

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n. 计算

 

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