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
Porque Ele Vive // Victor Valente | Conferência Dunamis 2017
B1
5:40
As 10 GÍRIAS CARIOCAS Mais Usadas (e seus significados REAIS!)
B1
11:58
This is the Easiest Natural Dog Food Recipe
B1
8:01
Como poupar R$6.890,00 em 1 ano? Desafio das 52 semanas
B1
1:27
What you NEED to know before getting a Golden Retriever! My experience 😍
B1
5:10
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
