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
How Glaciers Change the World! | Winter Science | SciShow Kids
B1
5:04
The Ending Of Arrival Explained
B1
4:13
Seven Worlds, One Prehistoric Planet: Mashup V. II (ft Sia and Hans Zimmer)
B1
4:02
You've Got a Friend in Me | Toy Story | Disney Junior Wonderful World of Songs | @disneyjr
B1
1:40
Goodbye Grammar! 3 Steps To Learn English Grammar
B1
14:29
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
