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
24:55
Educational
The Origin and Evolution of Piston Engines
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
Anitta - Lobby (Live from The 68th GRAMMY Awards)
B1
3:02
Os MELHORES MOMENTOS de Bebel e Agostinho! | A Grande Família | Sessão Nostalgia | Multishow
B1
15:56
Explicando Todas as Religiões em 13 Minutos
B1
13:35
Um Barril De Rap pt Atentado Napalm - Eram Os Deuses Astronautas? (prod.Froid)
B1
5:15
Stoicism: The Philosophy of Happiness and Detachment | Leandro Karnal
B1
11:47
Veículos & Histórias®
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
