美语听力讲解:美国路易斯安那州遭遇严重洪灾 至少3人死亡

Our coverage today begins with severe flooding in part of the southern U.S. Baton Rouge is the capital of Louisiana. It's in the southeastern part of the state and the area around Baton Rouge has been soaked.
The community of Livingston, for instance, has gotten more than 24 inches, more than two feet of rain and that since last Wednesday alone. The National Weather Service says that a chance of any area getting this much flooding in a given year is just 1 percent.
At least three people have died because of this. Louisiana Governor John Bel Edwards deployed the National Guard and says more than 7,000 rescues have been made so far.
Here, you see a man saving a woman and her dog after trying to open the convertible top of her sinking car. More rain is expected. A flash flood emergency has been declared in some areas.
Now, a quick explanation on the difference between a flood and a flash flood.
今天的第一条新闻来关注美国南部地区的严重洪灾。巴顿鲁日是美国路易斯安那州首府。巴顿鲁日位于路易斯安那州东南部，该市周边地区已被洪水淹没。
举例来说，自上周三以来，利文斯顿地区的降水量已经超过24英寸。美国国家气象局表示，一年中任何地区发生这种严重洪灾的概率只有1%。
目前至少有三人因洪灾死亡。路易斯安那州州长约翰·贝尔·爱德华兹为应对灾情部署了国民警卫队，他说目前已有超过7000人获救。
你可以看到，一个男人在打开一名女子被淹汽车的折叠式车顶以后，将她和她的狗救了出来。预计还会有更多降雨。一些地区宣布进入暴洪紧急状态。
现在我们来简单介绍一下洪水和暴洪的区别。

DEREK VAN DAM, cnn METEOROLOGIST: This is the radar estimated total. You can see the color coordinated legend at the top of your screen. That shading of white indicating 500 or more millimeters of rain. And this has significant impacts on the rivers and streams across Louisiana. They all flow into the Gulf of Mexico, of course.
This is interesting. This is a flood gauge from the Comite River. And I want you to see that rapid rise in the river. It actually rose 25 feet in 12 hours and that my friend is called flash flooding. That line right there that you see in top portion of this graph, that is the record flood stage. It's actually was higher than that by about four feet.
But take a look at this. This is a difference, a flood is a rise of a river or stream out of its natural banks. But a flash flood is the rapid rise of a river or stream and people just cannot handle a rapid rise in the water, including this 911 call center. They had to be evacuated.
cnn气象学家德瑞克·范·戴姆：这是雷达估算。你可以在屏幕最上方看到彩色图例。白色部分表示降雨量在500毫米以上。这对路易斯安那州的河流和小溪产生了重要的影响。当然，所有河流都要注入墨西哥湾。
这很有意思。这是科米特河的洪水估算。大家看，河水水位上涨迅猛。水位在12个小时内上涨了25英尺，这就称之为暴洪。你可以看到，这幅图顶部的这条线，这就是创记录的洪水水位。实际上洪水水位已经上涨了约4英尺。
再看一下这张图。这就是不同点，洪水是指河流或小溪的水位上涨，漫出河岸。而暴洪是指河流和小溪水位的迅猛上涨，人们无法处理水位的迅猛上涨，即使911呼叫中心也不行。所以必须让人员撤离。

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