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
学习统计
CEFR 等级
难度
字幕 (31 片段)
well if we don't do something nature
will sometimes a culling is the only way
to ensure that the species survives
and history will see valentine
as a man who saved humanity from
extinction and he gets to pick and
choose who gets cold does he all his
完整字幕可在视频播放器中查看
评论 (0)
登录后评论互动模式
测验
正确答案：
相关视频
Witness to Steve Irwin's Death - Smarter Every Day116
Victoria Coren Mitchell leaves Mary Berry speechless | The Great Sport Relief Bake Off
How to lie using visual proofs
La La Land - "Audition (the fools who dream)" scene
Introduction to Economics Part 1 - Professor Ryan
Claire Wilkins
测验
正确答案：
观看视频时会出现测验
记忆技巧
来自此视频
免费开始学语言
