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。 Actually, they keep using these two words just like this all the time. Rein one and the same Lyrics they use "at a lesson" and "rein class" and my students are quite confused about it. Regarding exgerman's Postalisch in #17, When referring to a long course https://seitensprungdeutschland03456.articlesblogger.com/56280476/top-jeweils-fünf-flight-urban-news