本集内容. Dogs were man's best friend far earlier than thought. 狗成为人类 “最佳伙伴” 的时间远早于早前认知. 文字稿. It's a small piece of jawbone, bu ...

Mind-reading machine helps man walk again 读脑机械装置让瘫痪者再次行走 Episode 191010 / 10 Oct 2019 Learn English words and phrases from ...