You must learn how to use dictionary and reference-books.
你们要学会使用词典和工具书。
The dictionary, encyclopedia and annual are three important reference books.
的翻译是：该词典，百科全书，每年有三个重要的参考书籍。
Because of its great achievements, the Modern Chinese Standard Dictionary has become one of the most authoritative reference books.
《现代汉语规范字典》因其丰厚的实绩，成为现代汉字方面最具权威性的工具书之一。
应用推荐