adept：熟练的，老练的，精通的 

词根词缀：ad-加强意义 +ept(-apt-)适合→能干

• preservative
• preserve
• preset
• preside
• president
• presidential
• presidium
• press
• pressie
• pressing
• press-up
• pressure
• pressurize
• prestidigitation
• prestidigitator
• prestige
• prestigious
• presto
• presumable
• presumably
• presume
• presumption
• presumptive
• presumptuous
• presuppose