adulthoodKK [əˋdʌˏlthʊd] /əˈdʌˌlthʊd/名詞1成年期、成年階段Many childhood allergies simply disappear by early adulthood.許多兒童時期的過敏症狀到了成年初期就自然消失了。2成年、成人身分Moving out of her parents' house marked her entry into adulthood.搬出父母家象徵著她正式邁入成年。