【英语时差8,16】雷尼尔峰（上）

On our last program, we introduced a mysterious geological feature that can be found on the slopes of Mount Rainier, a volcano in Washington state. Flows of hardened lava¹ cling to the tops of ridges² as they wind down the mountainside, ignoring deep valleys to either side. Why Didn’t The lava Flow Down The Valleys, As Any Other Liquid Would? The key to this is the epoch³ in which these features formed. They formed during an ice age, which means that this curious geography is the result of a tremendous, elemental battle between fire and ice–a battle which ice won. Imagine a volcano, besieged⁴ by glaciers⁵. The glacial ice is thickest where it’s filling deep valleys on the mountainside, and thinnest where there are ridges that almost poke⁶ their rocky spines⁷ up through the ice sheet.

1 lava   

n.熔岩，火山岩

参考例句：

• The lava flowed down the sides of the volcano.熔岩沿火山坡面涌流而下。
• His anger spilled out like lava.他的愤怒像火山爆发似的迸发出来。

2 ridges   

n.脊( ridge的名词复数 )；山脊；脊状突起；大气层的)高压脊

参考例句：

• The path winds along mountain ridges. 峰回路转。
• Perhaps that was the deepest truth in Ridges's nature. 在里奇斯的思想上，这大概可以算是天经地义第一条了。

3 epoch   

n.(新)时代；历元

参考例句：

• The epoch of revolution creates great figures.革命时代造就伟大的人物。
• We're at the end of the historical epoch,and at the dawn of another.我们正处在一个历史时代的末期，另一个历史时代的开端。

4 besieged   

包围，围困，围攻( besiege的过去式和过去分词 )

参考例句：

• Paris was besieged for four months and forced to surrender. 巴黎被围困了四个月后被迫投降。
• The community besieged the newspaper with letters about its recent editorial. 公众纷纷来信对报社新近发表的社论提出诘问，弄得报社应接不暇。

5 glaciers   

冰河，冰川( glacier的名词复数 )

参考例句：

• Glaciers gouged out valleys from the hills. 冰川把丘陵地带冲出一条条山谷。
• It has ice and snow glaciers, rainforests and beautiful mountains. 既有冰川，又有雨林和秀丽的山峰。 来自英语晨读30分（高一）

6 poke   

n.刺，戳，袋；vt.拨开，刺，戳；vi.戳，刺，捅，搜索，伸出，行动散慢

参考例句：

• We never thought she would poke her nose into this.想不到她会插上一手。
• Don't poke fun at me.别拿我凑趣儿。

7 spines   

n.脊柱( spine的名词复数 )；脊椎；（动植物的）刺；书脊

参考例句：

• Porcupines use their spines to protect themselves. 豪猪用身上的刺毛来自卫。
• The cactus has spines. 仙人掌有刺。 来自《现代英汉综合大词典》