英语听力：自然百科 海洋天堂大堡礁:堡礁内外—21

 A cyclone¹ can be over 500kms across with a wind swirling² around the eye of 300kms per hour.It was the most destructive force that great barrier reef must face.And in Feb,2011,this part of reef was hamered by the biggest storm in the living memory,cyclone Yazi.This is special braodcast of 9 news with Fitter live in the cyclone.Good evening,and wellcome to the special edition of 9 news live from daily base,the cyclone Yazi based down on north Queensland.This is the light of  the satilite emages of the biggest cyclone Astralia has experieced in more than 100 years. Estimated to have the same density³ as hurricane Catrina.It's category 5,you can't get anything more powerful.Daybreak exposes the ferosity of cyclone Yazi.We are expecting to get to tommorow morning.The things are of deverstation and heartbreak.Things are unprecidented  in not only Queensland but also in Astralia history.Island resorts were destroyed and masssive storm surge smashed into marinas,demolishing everything it touched.

1 cyclone   

n.旋风，龙卷风

参考例句：

• An exceptionally violent cyclone hit the town last night.昨晚异常猛烈的旋风吹袭了那个小镇。
• The cyclone brought misery to thousands of people.旋风给成千上万的人带来苦难。

2 swirling   

v.旋转，打旋( swirl的现在分词 )

参考例句：

• Snowflakes were swirling in the air. 天空飘洒着雪花。 来自《现代汉英综合大词典》
• She smiled, swirling the wine in her glass. 她微笑着，旋动着杯子里的葡萄酒。 来自辞典例句

3 density   

n.密集，密度，浓度

参考例句：

• The population density of that country is 685 per square mile.那个国家的人口密度为每平方英里685人。
• The region has a very high population density.该地区的人口密度很高。