The video owner has disabled playback on external websites.

This video is no longer available on YouTube.

This video cannot be played right now.

Watch on YouTube

解锁AI学习工具

注册即可使用强大工具,帮助你从每个视频中更快地学习。

场景解析 短语猎手 词卡复习 跟读练习 语音回放
免费注册
B1 中级 英语 9:13 1,575 单词 Science & Tech

Grass Could Save The Arctic

SciShow · 140,031 次观看 · 添加于 2 个月前

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。

学习统计

B1

CEFR 等级

1,575

总词数

680

独特词汇

5/10

难度

词汇多样性 43%

字幕 (90 片段)

下载
00:00

In a remote corner of Siberia, a Russian geophysicist named Sergey Zimov, and his son, Nikita, are bringing back the Ice Age.

00:08

It isn’t like they have woolly mammoths and saber-toothed cats running around.

00:12

Although they’d certainly be open to hosting some if anyone ever finds a solution  to that whole extinction thing.

00:17

Instead, the Zimovs are trying  to restore the ecosystem to the way it was 12,000 years ago.

00:23

Back in the 90s, the Russian government  gifted them 160 square km of land to run their massive experiment, hich they named Pleistocene Park.

00:32

And while it’s definitely eccentric,  the Zimovs’ “backyard” hobby could have huge implications for  the fate of the entire planet.

00:40

[Intro music]

00:43

Sergey Zimov has dedicated  the second half of his career to studying how grazing animals  affect grassland habitats.

00:50

He roped his son into joining the cause, and Nikita is now the  director of Pleistocene Park.

00:55

They’re situated in a stark, frozen landscape, about a 4-hour flight away from the nearest city.

01:00

If you lived out here, it wouldn’t be  hard to imagine the world frozen solid.

01:04

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.

01:13

But even in Siberia, that’s not how it was.

01:15

Geological records indicate  that this shrubby tundra was once covered in lush  meadows with grazing megafauna.

01:22

That kind of ecosystem is called a mammoth steppe.

01:25

Steppes are dry grassy plains  characterized by low amounts of rain.

01:29

And mammoth is in the name because of, yanno, the mammoths.

01:32

But since the end of the Ice Age, Siberia has been a scrubby tundra.

完整字幕可在视频播放器中查看

核心词汇 (16)

you A1 pronoun

你是一个好人。(You are a good person.)

eat A1 verb

吃的意思是把食物放进嘴里,咀嚼并吞下。

large A1 noun

“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。

本视频中的语法

用练习题学习

从这个视频生成词汇、语法和理解练习

词汇与语法 理解测验 雅思考试 写作练习
注册开始练习
还没有评论。成为第一个分享想法的人!

注册解锁全部功能

追踪进度、保存词汇、练习题目

免费开始学语言