come of age
成年，到达法定年龄或成人年龄
书面/口语·用于描述成年或成熟
英文释义
to reach the age when one is legally recognized as an adult
例句
He came of age on his 18th birthday and could finally vote.
典故来源
源自中世纪法律，指达到法定成年年龄，通常为21岁或18岁。