Microsoft Research has released a Windows phone 7 client for their Engkoo Chinese/ English dictionary service.
The app includes fresh definitions and sample sentences mined from the web, pronunciation (audio), autocomplete with built-in support for spelling correction, wildcard (*, ?), and pinyin input.
The app can define or translate a word, phrase or sentence and includes a multitude of NLP and Speech technologies such as cross language retrieval, alignment, sentence classification, statistical machine translation, text-to-speech, and phonetic search.
The app is free and can be found in Marketplace here.
Read more about the technology at Microsoft Research here.