你去网站，下边有这些栏，那里有讲课视频。
You go to the website, there are all these bars down the side, so there are lecture videos.
youdao
网站上还有讲课和演示的视频。
The Web site also has videos of lectures and demonstrations.
柏克莱分校称，它将在YouTube网上提供讲课的视频。
Berkeley said it will offer videos of lectures on YouTube.
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