Today I get introduced to 2 good friends: the en2zh and zh2en. They both are very good translators which can translate english to chiness and vice versa.
Actually they are bots. A (ro)bot is a piece of software that acts as a chat contact and provide some fun or useful funtionality.
Just add firstname.lastname@example.org and email@example.com as a friend in Google Talk and send it a message to translate from English to Chinese and vice versa. You can also make more firends (bots) and there are 23 of them. See GoogleTalk for more information.