VOA慢速英语:The Otherworldly Beauty of Badlands National Park

短语讲解：

1. Hundreds of thousands of years ago, this whole area was grassland.

hundreds of thousands of 几十万，无数
例句：Hundreds of thousands of people packed into the mosque
几十万人挤进了那座清真寺。

2. Water and ice cut into the surface of the Earth, splitting open some of its oldest rocks.

cut into 切入; 打断[扰]
例句：Don't cut into the story--let her finish.
不要打断这个故事──让她讲完。

3. The term “badlands” has come to be used for areas where soft rock is eroded in a very dry climate.

be used for 用来做…
例句：It can also be used for the registration of temporal fluctuations of E.
它还可以用来记录E随时间的波动。

4. The long history of the Badlands began some 65 million years ago, around the time the dinosaurs died out.

die out （指物种、家族、习惯、观念等） 绝迹，消失; 绝种
例句：If we stopped at that the human race would die out.
要是我们拘泥这一点，那么人类就会绝迹。

5. The land at the bottom of the sea was black shale rock.

at the bottom of 在…的底部
例句：The book I want is (right) at the bottom of the pile.
我要的那本书（就）在这堆书底下。

6. In time, the Sioux way of life on the Great Plains came to an end.

come to an end 结束，终止; 完事
例句：The meeting has come to an end.
会议结束了。