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
"Arrival" EXPLAINED in 3 minutes
B1
2:50
Adaptive (Acquired) Immunity - Immunology - Biology 🧬 of Immune System
B1
23:15
How to Be an Englishman | The Crown (Alex Jennings, Jude Akuwudike, Salim Daw)
B1
3:16
Searching for the World’s Oldest Pub
B1
2:50
Avatar: Fire and Ash | Official Trailer
B1
2:26
The View
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
