英語(yǔ)聽力：長(zhǎng)毛象王國(guó)-9

This is Alaska today, a wetland of forests, boggy tundra, lakes and rivers — rivers that still churn out fresh clues to the Ice Age past. This is a brick-sized tooth, and it belong to a woolly mammoth. Its narrow ridges of enamel tell us more about how mammoths lived.

Studies of modern elephants suggest that the more grass you eat, the more ridges you need. And mammoth’s teeth have even more ridges than those of any elephants. It seems that mammoths fed almost exclusively on grass. They were gargantuan grazers.

Fossil bones help draw a picture of another well-known grazer, a kind of horse. Wild horses live in small herds. And Beringia would have been the scene of vicious battles between rival stallions.

But Beringia’s horses are now gone. Today their closest living relatives roam the open steppes of central Asia. Like mammoths, horses are predominantly grazers.

1 boggy

adj.沼澤多的

參考例句：

Of, resembling, or characterized by a marsh or marshes; boggy. 沼澤般的，濕軟的：類似沼澤地的，沼澤地所特有的;多沼澤的。 來(lái)自互聯(lián)網(wǎng)

The boggy is out of order, would be instead another one! 球車壞了，需要更換一部。 來(lái)自互聯(lián)網(wǎng)

2 tundra

n.苔原，凍土地帶

參考例句：

The arctic tundra is at the top of the world around the North Pole.北極凍原是指北極點(diǎn)周邊的地區(qū)，是世界最高的地方。

There is a large amount of methane gas under the Siberian tundra.西伯利亞的凍土地帶之下有大量的甲烷氣體。

3 mammoth

n.長(zhǎng)毛象;adj.長(zhǎng)毛象似的，巨大的

參考例句：

You can only undertake mammoth changes if the finances are there.資金到位的情況下方可進(jìn)行重大變革。

Building the new railroad will be a mammoth job.修建那條新鐵路將是一項(xiàng)巨大工程。

4 ridges

n.脊( ridge的名詞復(fù)數(shù) );山脊;脊?fàn)钔黄?大氣層的)高壓脊

參考例句：

The path winds along mountain ridges. 峰回路轉(zhuǎn)。

Perhaps that was the deepest truth in Ridges's nature. 在里奇斯的思想上，這大概可以算是天經(jīng)地義第一條了。

5 enamel

n.琺瑯，搪瓷，瓷釉;(牙齒的)琺瑯質(zhì)

參考例句：

I chipped the enamel on my front tooth when I fell over.我跌倒時(shí)門牙的琺瑯質(zhì)碰碎了。

He collected coloured enamel bowls from Yugoslavia.他藏有來(lái)自南斯拉夫的彩色搪瓷碗。

6 gargantuan

adj.巨大的，龐大的

參考例句：

My gargantuan,pristine machine was good for writing papers and playing solitaire,and that was all.我那龐大的、早期的計(jì)算機(jī)只適合寫文章和玩紙牌游戲，就這些。

Right away,I realized this was a mistake of gargantuan proportions.我立刻意識(shí)到這是一個(gè)巨大的錯(cuò)誤。

7 herds

獸群( herd的名詞復(fù)數(shù) ); 牧群; 人群; 群眾

參考例句：

Regularly at daybreak they drive their herds to the pasture. 每天天一亮他們就把牲畜趕到草場(chǎng)上去。

There we saw herds of cows grazing on the pasture. 我們?cè)谀抢锟吹揭蝗喝旱呐Ｔ诓莸厣铣圆荨?/p>