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
Gusttavo Lima - Evidências
B1
2:33
Caetano Veloso canta ‘Divino Maravilhoso’ | Altas Horas 11/10/2025
B1
5:10
Cheias de Charme: cante o hit 'Vida de Empreguete'
B1
0:54
5 Grammar Rules You NEED to Know!
B1
11:09
Where to stay in Lisbon! The best neighborhoods and regions to stay in. All the tips!
B1
7:05
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
