Haici---a very good free online English dictionary

Dict.CN has more than 5 million non-repetitive entries, which is quite large.

After sampling tests, Dict.CN's current vocabulary database basically includes all the words that should be included in authoritative dictionaries for printing and publishing. It also includes a large number of words that have not been widely used or officially recorded. The current professional categories involved in the vocabulary database include chemistry, biology, medicine, computers, civil engineering, machinery, industry, sports, politics, religion, daily life, job hunting, clothing dressing, food recipes, titles and positions, English-Chinese names of films and books, etc.

I also like Baidu Dictionary, it's simple and straightforward, hehe. If Dict.CN could learn from the design of Baidu Dictionary, it might retain more people.

Anyway, this is a website worth collecting, and it will give you a hand when you need it o(∩_∩)o.