Online English-Chinese Dictionary
    (Type an English word and get back Chinese words in Big5/GB/Image)

Online Chinese Character Multi-dictionaries
    (Type an Chinese Character or English word, get back the definitions from multiple on-line dictionaries)

Chinese Search Engines

SINA Network
    (Separate pages for USA, Taiwan, Hong Kong, and Mainland China)
Chinese Yahoo!

Yahoo! China (Focus on Mainland China)