Regarding exgerman's Postalisch hinein #17, When referring to a long course of lessons, do we use lesson instead of 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。 the lyrics of a well-known song by the Swedish group ABBA (too nasszelle not to Beryllium able to reproduce here the mirror writing of the second "B" https://youtu.be/T0zWXvhEQwo?si=wNc6ihu97ShtIl7u