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
15:29
Educational
Understanding the Cells of 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
Paul Rudd Shaved His Beard In Stages | CONAN on TBS
B1
3:09
Oscar for the funniest speech goes to...
B1
1:39
Zarna Garg Posted a Personal Ad to Find a Husband, Talks A Nice Indian Boy (Extended) | Tonight Show
B1
8:57
Soil | NCERT Class 7 Science Chapter 9 | Part 2/4 | English Explanation | TicTacLearn English
B1
9:21
Battling Doc Ock On The Bridge | Fight Scene | Spider-Man: No Way Home | Now Playing
B1
8:22
Zero To Finals
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
