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
23:15
Educational
Adaptive (Acquired) Immunity - Immunology - Biology 🧬 of 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
Clueless Gamer: "Shadow Of War" With Kumail Nanjiani | CONAN on TBS
B1
7:54
The telecommunications divide between cities and the bush | Landline | ABC News
B1
9:05
Circle of Life | The Lion Guard | Disney Junior Wonderful World of Songs | Disney Junior
B1
1:40
The science of laughter - Sasha Winkler
B1
5:32
NOW THE DISGRACED BBC ATTACK CATHERINE PRINCESS OF WALES - LATEST #ROYAL #CATHERINE #news
B1
5:33
Medicosis Perfectionalis
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
