18. A tangible computer readable memory storing computer-executable instructions that, when executed, cause one or more processors to perform acts comprising: retrieving one or more bilingual web pages based at least on a search term, each bilingual web page including a plurality of terms that comprise the search term and one or more additional terms in a first language; forming a plurality of candidate translation pairs by selecting one or more candidate translations for each of the plurality of terms, and forming each candidate translation pair by including one of the one or more candidate translations and one of the plurality of terms; extracting one or more translation layout patterns from the plurality of candidate translation pairs; computing one or more features based on the plurality of terms, the one or more features including a feature that identifies lexical boundaries of terms, the feature being a product of a symmetric conditional probability and a context dependency that are derived from frequencies of words in the plurality of terms; deriving a term translation in a second language for the search term in the first language based on a hidden conditional random field (HCRF) model that includes the one or more candidate translations, the one or more translation layout patterns, and the one or more features, the HCRF model including a hidden variable that represents the one or more translation layout patterns; and displaying the term translation and the search term to a user.
18. A tangible computer readable memory storing computer-executable instructions that, when executed, cause one or more processors to perform acts comprising: retrieving one or more bilingual web pages based at least on a search term, each bilingual web page including a plurality of terms that comprise the search term and one or more additional terms in a first language; forming a plurality of candidate translation pairs by selecting one or more candidate translations for each of the plurality of terms, and forming each candidate translation pair by including one of the one or more candidate translations and one of the plurality of terms; extracting one or more translation layout patterns from the plurality of candidate translation pairs; computing one or more features based on the plurality of terms, the one or more features including a feature that identifies lexical boundaries of terms, the feature being a product of a symmetric conditional probability and a context dependency that are derived from frequencies of words in the plurality of terms; deriving a term translation in a second language for the search term in the first language based on a hidden conditional random field (HCRF) model that includes the one or more candidate translations, the one or more translation layout patterns, and the one or more features, the HCRF model including a hidden variable that represents the one or more translation layout patterns; and displaying the term translation and the search term to a user. 20. The tangible computer readable memory of claim 18 , wherein the retrieving includes retrieve the one or more bilingual web pages using a query based on the search term and one or more trigger words.