- a person who has a comprehensive and authoritative knowledge of or skill in a particular area专家; 权威; 高手：
an expert in health care
保健专家
a financial expert.
金融专家。
- having or involving such knowledge or skill内行的; 专家的：
he had received expert academic advice
他得到了专家学术上的指导
an expert witness.
专家证人。
派生词
expertly
adverbexpertness
noun词源
Middle English (as an adjective)： from French, from Latin expertus， past participle of experiri 'try'. The noun use dates from the early 19th cent. Compare with EXPERIENCE and EXPERIMENT.