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
互动模式
测验
正确！
不太对。
正确答案：
相关视频
Good Food Habits
B1
1:09
Linear combinations, span, and basis vectors | Chapter 2, Essence of linear algebra
B1
9:59
This video will change the way you watch INCEPTION
B1
11:07
Understanding Cardiovascular Disease: Visual Explanation for Students
B1
8:59
LA LA LAND | Clip "City of Stars" | Englisch English | Jetzt im Kino!
B1
1:56
MAD MAX
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
