Open Dictionary is a natural-language English expression search service, brought by a prominent English education institute in Korea. The idea is simple enough; You enter a sentence in Korean, and then Open Dictionary finds the best English expression for the particular sentence for you. Open Dictionary is sort of a Google universal search for English studies: It crawls data from various sources, including news articles, Q&A content, literatures, bible, and even movie clips.
It's a pretty simple service, but I find it working quite okay. When I typed "당신은 정말 멋져요" (You look gorgeous), Open Dictionary gave me some quite relevant search results. The service also allows viewers to add annotations to provide tips, which could come handy when experts (e.g. English teachers) could add more context to a certain expression. ("By the way, this is a great pick-up line at the bar.")
TAG Open Dictionary
