1. 名詞
   專家, 行家
   達人, 能手
   熟練者
   (軍隊的)特等射手
   an expert in/on/at ...(領域等):
   ...的專家
   ...的行家
   ...的達人
   ...的能手
   an expert at/in/on ...(動詞ing ...):
   

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   同義字詞
   ace,adept,artist,authority,cognoscente,connoisseur,crackerjack,crackajack,fiend,geek,guru,hand,hotshot,maestro,master,maven,mavin,past master,scholar,shark,virtuoso,whiz,wizard
   

2. 形容詞
   專家的
   熟練的, 老練的
   有經驗的
   專門的, 內行的
   expert in/at ...(領域等):
   對...專門的
   對...內行的
   expert at/in ...(動詞ing ...):
   對做...專門的
   對做...內行的
   

   同義字詞
   adroit,artful,deft,delicate,dexterous,dextrous,masterful,masterly,practiced,practised,skillful,virtuoso,workmanlike
   accomplished,ace,adept,complete,consummate,crack,crackerjack,educated,experienced,good,great,master,masterful,masterly,practiced,practised,proficient,skilled,skillful,versed,veteran,virtuoso
   

例句

1. Expert : Lee Samatowic Contact: www.
2. The author is an expert on amphibians.
3. Ah, what what it is to have an expert .
4. Karpov is a leading expert in this opening.
5. You are an expert on the atrocities of 1948 .
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