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
B1 中级
英语
5:13
Educational
Introduction to Innate Immunity
学习统计
B1
CEFR 等级
5/10
难度
评论 (0)
登录后评论
还没有评论。成为第一个分享想法的人！
互动模式
测验
正确！
不太对。
正确答案：
相关视频
PHILOSOPHY - BIOETHICS 5: Why Do People Disagree About The Ethics Of Euthanasia?
B1
6:35
How To Leave a Party Early - The Office US
B1
4:53
Kreese Apologizes as Johnny Breaks Down in Tears | Cobra Kai (William Zabka, Martin Kove)
B1
2:50
Viola Davis Gives Powerful Speech About Diversity and Opportunity | Emmys 2015
B1
2:43
Celestial Sphere Explained
B1
3:59
Professor Dave Explains
测验
正确！
不太对。
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
