英语听力：探索发现 2013-01-16 冰河新新州 Ice Age Oasis—15
时间：2018-12-27 作者：英语课 分类：探索与发现2013年
英语课
Could it be that drastic water shortage was the reason for the mastodons' epic 1 migrations 2? Another big piece of this puzzle lies far out to sea.
This is the ocean floor. But this isn't rock sprouting 3 out at the bottom. It's wood. It's the remains 4 of prehistoric 5 tree stumps 6, some dated at more than 12,000 years old.
This sunken forest is unmistakable evidence that what is now seabed was once dry ground. And what is now Florida's coastline was once many miles in land. But why? To answer that, we have to go back to the mighty 7 ice age glaciers 8 that covered almost half the continent.
These glaciers contained immeasurable amounts of ice. So much water was locked up in this ice that it lowered sea levels by over 70 meters. The southeast coastal 9 shelf was exposed and Florida doubled in size. The Everglades were dry land.
1 epic
n.史诗，叙事诗；adj.史诗般的，壮丽的
- I gave up my epic and wrote this little tale instead.我放弃了写叙事诗，而写了这个小故事。
- They held a banquet of epic proportions.他们举行了盛大的宴会。
2 migrations
n.迁移，移居( migration的名词复数 )
- It foundered during the turmoils accompanying the Great Migrations. 它在随着民族大迁徙而出现的混乱中崩溃。 来自辞典例句
- Birds also have built-in timepieces which send them off on fall and spring migrations. 鸟类也有天生的时间感应器指导它们秋春迁移。 来自互联网
3 sprouting
v.发芽( sprout的现在分词 )；抽芽；出现；（使）涌现出
- new leaves sprouting from the trees 树上长出的新叶
- They were putting fresh earth around sprouting potato stalks. 他们在往绽出新芽的土豆秧周围培新土。 来自名作英译部分
4 remains
n.剩余物，残留物；遗体，遗迹
- He ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
- The remains of the meal were fed to the dog.残羹剩饭喂狗了。
5 prehistoric
adj.（有记载的）历史以前的，史前的，古老的
- They have found prehistoric remains.他们发现了史前遗迹。
- It was rather like an exhibition of prehistoric electronic equipment.这儿倒像是在展览古老的电子设备。
6 stumps
（被砍下的树的）树桩( stump的名词复数 )； 残肢； （板球三柱门的）柱； 残余部分
- Rocks and stumps supplied the place of chairs at the picnic. 野餐时石头和树桩都充当了椅子。
- If you don't stir your stumps, Tom, you'll be late for school again. 汤姆，如果你不快走，上学又要迟到了。
7 mighty
adj.强有力的；巨大的
- 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。