柯林斯詞典adulthood /??d?lt?h?d/ 1. N-UNCOUNT Adulthood is the state of being an adult. 成年 Few people nowadays are able to maintain friendships into adulthood. 現今很少有人能夠把友誼維持到成年。 返回 adulthood劍橋詞典the part of someone's life when they are an adult 成年（時期） People in England legally reach adulthood at 18. 在英國，年滿18嵗的人爲法定成人。 Responsibility, I suppose , is what defines adulthood. 我想，成年就意味著責任。 返回 adulthood