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AI摘要
这个环境科学视频探讨了西伯利亚的一项独特实验,研究人员试图恢复冰河时代的草原生态系统以减缓北极永久冻土的融化。学习者将积累与气候科学、生态学和保护相关的词汇,包括永久冻土、生态系统恢复和苔原等术语。纪录片叙事风格帮助B1级别的学习者练习理解英语中的科学解释和因果推理。
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下载In a remote corner of Siberia, a Russian geophysicist named Sergey Zimov, and his son, Nikita, are bringing back the Ice Age.
It isn’t like they have woolly mammoths and saber-toothed cats running around.
Although they’d certainly be open to hosting some if anyone ever finds a solution to that whole extinction thing.
Instead, the Zimovs are trying to restore the ecosystem to the way it was 12,000 years ago.
Back in the 90s, the Russian government gifted them 160 square km of land to run their massive experiment, hich they named Pleistocene Park.
And while it’s definitely eccentric, the Zimovs’ “backyard” hobby could have huge implications for the fate of the entire planet.
[Intro music]
Sergey Zimov has dedicated the second half of his career to studying how grazing animals affect grassland habitats.
He roped his son into joining the cause, and Nikita is now the director of Pleistocene Park.
They’re situated in a stark, frozen landscape, about a 4-hour flight away from the nearest city.
If you lived out here, it wouldn’t be hard to imagine the world frozen solid.
That’s probably how many of us imagine the Earth looked 12,000 years ago at the end of the Pleistocene geological era, better known as the last Ice Age.
But even in Siberia, that’s not how it was.
Geological records indicate that this shrubby tundra was once covered in lush meadows with grazing megafauna.
That kind of ecosystem is called a mammoth steppe.
Steppes are dry grassy plains characterized by low amounts of rain.
And mammoth is in the name because of, yanno, the mammoths.
But since the end of the Ice Age, Siberia has been a scrubby tundra.
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你是一个好人。(You are a good person.)
吃的意思是把食物放进嘴里,咀嚼并吞下。
“大号”是衣服或咖啡等物品的特定尺寸类别。在商店或餐厅从一系列标准尺寸中进行选择时,通常会使用它。
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