What is good dictionary

A good language dictionary can help learners of English to greatly improve their English. English education is increasingly getting harder. However, many student's English level has still not improved. Many Japanese students use a dictionary to learn English words and sentence, but almost all students struggle to communicate well in English. One reason is that learners of English do not understand the accurate meanings of many English words. Most dictionaries contain many definitions of English words and example sentences, but they are not easy to use, in regard to organization. Many definitions and example sentences only confuse learners because learners are not good at searching. A good dictionary should not confuse learners because they are as important as a good English textbook or teacher.