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
16:31
Educational
Introduction to the immune system
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
ADVANCED MEDICAL VOCABULARY 💊 | Words & Phrases You Should Know
B1
11:57
funniest joel & ellie moments ~ the last of us
B1
11:14
Earth 101 | National Geographic
B1
3:33
How to Speak Like a Canadian - 21 Funny Canada Slang Words and Phrases
B1
8:51
The Trolley Problem | The Good Place | Comedy Bites
B1
3:18
Osmosis from Elsevier
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
