I’ve long been a fan of David Lancashire’s Chinese-English dictionary and anotation engine Adsotrans. I’ll admit I’ve had my share of frustrations with its previously poor support of traditional characters, but I’ve always loved the engine.
Since he David joined Chinese Pod, his various technical marvels have been springing up here and here throughout their service, and I love it! Their new dictionary is huge and growing at a good clip– rapidly closing in on the total size of ABC Chinese-English dictionary. More common entries also have example sentences, which are fully adsostated with pinyin pop-ups and accompanied by voice recordings.
Here’s my Firefox search bookmark for the CPod dictionary: http://labs.chinesepod.com/?q=node%2F4&search=%s