Whether we usually browse the web or read papers, we will encounter a few difficult English words more or less. At this time, we can't help but look up the dictionary. Online dictionary tools can be roughly divided into two types: offline dictionaries, which do not require an internet connection, and can be conveniently used for word translation after downloading, installing and running; The other type is online dictionary, which requires us to visit a website and then enter the word to be searched. In terms of English learning, we have introduced a very good bilingual Chinese-English example sentence search before. Next, let's summarize some excellent English-Chinese dictionaries both online and offline.