specialize
v.
1610s, "to indicate specially," from special, adj. + -ize, perhaps on model of French spécialiser. Sense of "engage in a special study or line of business" is first attested 1881; biological sense is from 1851. Related: Specialized; specializing.
〔蒋〕[spect=look看,-ize动词后缀] 特别指出,专门研究,专攻