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
葡萄牙语
8:17
Educational
Wave Characteristics - Period, Frequency, Wavelength and Propagation Speed
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
Como vender qualquer coisa (sem ser chato)
B1
11:06
MTG (MORENA TROPICANA) DJ LUAN GOMES E LOIRIN PROD
B1
1:46
Being a child doesn't mean having a childhood | Full documentary "The Invention of Childhood" (2000)
B1
26:34
Bus 174 Case: The Truth Behind the Kidnapping
B1
25:40
Henrique e Juliano - ÚLTIMA SAUDADE (Manifesto Musical 2)
B1
2:35
Maurício Física
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
