underage
adj. 未成年的
n. 缺乏
例句
Underage youths can obtain alcohol from their older friends.
未到法定年龄的孩子可以从他们年长的朋友那里得到酒。
《柯林斯英汉双解大词典》
However, persons who are underage in their home state can get married in another state and then return to the home state legally married.
然而,在自己家乡的州未达到法定年龄的人可以在另一个州结婚,然后以合法成婚的身份返回本州。
Hint: he's underage.
暗示:他还未成年。