As a German dictionary, the following are several versions worth recommending: 1Merkmale- und Wörterwürfe für Deitsch: This is a comprehensive German dictionary that contains detailed explanations of grammar, vocabulary, and spellings. It was not only an authoritative German dictionary but also an essential tool for learning German. 2 German- und Fachwörterbank: This is a professional German dictionary that contains a large number of professional vocabulary and terms such as medicine, law, engineering, etc. Its authority and practicality were excellent and suitable for people engaged in German-related work. 3Wörterwürfe- und Fachwörterbank für Deitsch: This is another very popular German dictionary that contains a large number of daily and practical vocabulary such as greetings, introductions, questions, answers, etc. It was not only practical but also detailed, suitable for beginners and everyday language learning. 4 German- und Fachwörterbank: This is a comprehensive German dictionary that contains a large number of academic vocabulary and terms such as science, history, culture, etc. Its authority and practicality were excellent, suitable for people engaged in academic research or learning German. These are some of the more authoritative and practical German dictionary. You can choose one that suits you according to your needs and interests.