It can mean that, but it is usually restricted to a formal use, especially where a famous expert conducts a "class". 知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。 Yes. Apart from the example I have just given, a lecture is a private or public talk on a specific subject to people who (at https://fremdfickenwien21986.tribunablog.com/die-besten-side-of-mix-48108747