国家地理:Secret Yellowstone 黄石国家公园

Yellowstone National Park is a giant swatch of terrain¹. Ninety percent of it barely touched, wilderness².

Hidden within, one of the most remote places in "the Lower 48". Right here, no road in any direction for 22 miles. It's within the largest ecosystem³ of its type in the world. Hidden valleys never fully⁴ met.
A canyon⁵, 20 miles long. Sweeping⁶ grasslands⁷, more than enough to sustain the Yellowstone's 4,000 bison.
17 rivers dissect⁸ the wilderness.
Wetlands cover more than 10% of the backcountry, from the largest high altitude lake on the continent to at least 23 peaks over 10,000 feet.
This is Yellowstone, altogether, two million acres.

Few realize it's big enough to be its own state, bigger than Rhode Island and Delaware combined. Yet for all you can see, the real story behind Yellowstone is in what you can't see.

Right here, just underground lies one of the world's largest volcanoes. It reveals itself at the surface in menacing waves, with mud pots that belch⁹ toxic¹⁰ gas and fumaroles that hiss¹¹ with the acid vapor¹². Super-heated pools of water, steam vents¹³ and geysers attract visitors galore, some three million tourists a year. They come and go. Few understand that Old Faithful won't be faithful forever.


swatch: (n.) A sample strip cut from a piece of material. 样本
backcountry: (n.) A sparsely¹⁴ inhabited rural region. 边远地区
belch: (n.) To eject violently. 猛烈喷射
fumarole: (n.) A hole in a volcanic¹⁵ area from which hot smoke and gases escape. 喷气孔火
galore: (a.) In great numbers; in abundance 大量的，丰富的

1 terrain   

n.地面，地形，地图

参考例句：

• He had made a detailed study of the terrain.他对地形作了缜密的研究。
• He knows the terrain of this locality like the back of his hand.他对这一带的地形了如指掌。

2 wilderness   

n.杳无人烟的一片陆地、水等，荒漠

参考例句：

• She drove the herd of cattle through the wilderness.她赶着牛群穿过荒野。
• Education in the wilderness is not a matter of monetary means.荒凉地区的教育不是钱财问题。

3 ecosystem   

n.生态系统

参考例句：

• This destroyed the ecosystem of the island.这样破坏了岛上的生态系统。
• We all have an interest in maintaining the integrity of the ecosystem.维持生态系统的完整是我们共同的利益。

4 fully   

adv.完全地，全部地，彻底地；充分地

参考例句：

• The doctor asked me to breathe in,then to breathe out fully.医生让我先吸气，然后全部呼出。
• They soon became fully integrated into the local community.他们很快就完全融入了当地人的圈子。

5 canyon   

n.峡谷，溪谷

参考例句：

• The Grand Canyon in the USA is 1900 metres deep.美国的大峡谷1900米深。
• The canyon is famous for producing echoes.这个峡谷以回声而闻名。

6 sweeping   

adj.范围广大的，一扫无遗的

参考例句：

• The citizens voted for sweeping reforms.公民投票支持全面的改革。
• Can you hear the wind sweeping through the branches?你能听到风掠过树枝的声音吗？

7 grasslands   

n.草原，牧场( grassland的名词复数 )

参考例句：

• Songs were heard ringing loud and clear over the grasslands. 草原上扬起清亮激越的歌声。 来自《现代汉英综合大词典》
• Grasslands have been broken and planted to wheat. 草原已经开垦出来，种上了小麦。 来自《简明英汉词典》

8 dissect   

v.分割；解剖

参考例句：

• In biology class we had to dissect a frog.上生物课时我们得解剖青蛙。
• Not everyone can dissect and digest the public information they receive.不是每个人都可以解析和消化他们得到的公共信息的。

9 belch   

v.打嗝，喷出

参考例句：

• Cucumber makes me belch.黃瓜吃得我打嗝。
• Plant chimneys belch out dense smoke.工厂的烟囱冒出滚滚浓烟。

10 toxic   

adj.有毒的，因中毒引起的

参考例句：

• The factory had accidentally released a quantity of toxic waste into the sea.这家工厂意外泄漏大量有毒废物到海中。
• There is a risk that toxic chemicals might be blasted into the atmosphere.爆炸后有毒化学物质可能会进入大气层。

11 hiss   

v.发出嘶嘶声；发嘘声表示不满

参考例句：

• We can hear the hiss of air escaping from a tire.我们能听到一只轮胎的嘶嘶漏气声。
• Don't hiss at the speaker.不要嘘演讲人。

12 vapor   

n.蒸汽，雾气

参考例句：

• The cold wind condenses vapor into rain.冷风使水蒸气凝结成雨。
• This new machine sometimes transpires a lot of hot vapor.这部机器有时排出大量的热气。

13 vents   

（气体、液体等进出的）孔、口( vent的名词复数 )； （鸟、鱼、爬行动物或小哺乳动物的）肛门； 大衣等的)衩口； 开衩

参考例句：

• He always vents his anger on the dog. 他总是拿狗出气。
• The Dandelion Patch is the least developed of the four active vents. “蒲公英区”在这四个活裂口中是发育最差的一个。

14 sparsely   

adv.稀疏地；稀少地；不足地；贫乏地

参考例句：

• Relative to the size, the city is sparsely populated. 与其面积相比，这个城市的人口是稀少的。 来自《简明英汉词典》
• The ground was sparsely covered with grass. 地面上稀疏地覆盖草丛。 来自《简明英汉词典》

15 volcanic   

adj.火山的；象火山的；由火山引起的

参考例句：

• There have been several volcanic eruptions this year.今年火山爆发了好几次。
• Volcanic activity has created thermal springs and boiling mud pools.火山活动产生了温泉和沸腾的泥浆池。