英语听力：自然百科 黄石公园的夏天 Yellowstone—6
时间：2019-01-05 作者：英语课 分类：自然百科2012年
英语课
As the migrating herds 1 arrive in the plateau’s river valleys, the spring is here.
This is why they have made the journey after the famine of winter. Food is everywhere. Birds have flown in from as far away as the Arctic and subtropics. Canada geese join in flocks of white pelicans 2 to breed here.
A snow-covered wasteland is transformed to an American Serengeti. But it's a landscape like no other. Geysers made Yellowstone famous. Yellowstone sets above the molten core of a volcano. Underground water become super-heated and erupts into the air. Strangely, geysers and hot springs can creep around the landscape. The curious shapes of grotto 3 geyser are actually trees entombed and petrified 4 by minerals dissolved in the water.
兽群( herd的名词复数 )； 牧群； 人群； 群众
- Regularly at daybreak they drive their herds to the pasture. 每天天一亮他们就把牲畜赶到草场上去。
- There we saw herds of cows grazing on the pasture. 我们在那里看到一群群的牛在草地上吃草。
n.鹈鹕( pelican的名词复数 )
- Kurt watched the Pelicans fire their jets and scorch the grass. 库尔特看着鹈鹕运兵船点火，它们的喷焰把草烧焦。 来自互联网
- The Pelican Feeding Officers present an educational talk while feeding the pelicans. 那个正在喂鹈鹕的工作人员会边喂鹈鹕边给它上一节教育课。 来自互联网
n.洞穴
- We reached a beautiful grotto,whose entrance was almost hiden by the vine.我们到达了一个美丽的洞穴，洞的进口几乎被藤蔓遮掩著。
- Water trickles through an underground grotto.水沿着地下岩洞流淌。