英语听力：探索发现 2013-01-11 冰河新新州 Ice Age Oasis—13

 But despite their name, the mighty¹ Everglades did not exist during the ice age. So what did pre-historic Florida look like? There is one place in northern Florida that has revealed more ice age secrets than almost anywhere else, the dark slow-moving waters of the Aucilla River. Here ideal conditions for fossilization created a hidden store of ice age evidence. Unlike in the crystal clear spring waters, these clues were never unveiled for all to see. But the Aucilla has now been studied intensively for more than 20 years. 

 

Along some stretches of the riverbed were massive bones recreated here, perfectly² preserved for more than 13,000 years. One of the most significant discoveries was the huge skull³ of an American mastodon. Mastodons, close relatives of mammoths, were widespread all over North America during the ice age. They grew over three metres tall, the size of Africa elephants today. We know a lot about the mastodons, especially their diet, thanks to the preserved dung they left behind.

1 mighty   

adj.强有力的；巨大的

参考例句：

• A mighty force was about to break loose.一股巨大的力量即将迸发而出。
• The mighty iceberg came into view.巨大的冰山出现在眼前。

2 perfectly   

adv.完美地，无可非议地，彻底地

参考例句：

• The witnesses were each perfectly certain of what they said.证人们个个对自己所说的话十分肯定。
• Everything that we're doing is all perfectly above board.我们做的每件事情都是光明正大的。

3 skull   

n.头骨；颅骨

参考例句：

• The skull bones fuse between the ages of fifteen and twenty-five.头骨在15至25岁之间长合。
• He fell out of the window and cracked his skull.他从窗子摔了出去，跌裂了颅骨。