Underage means younger than the age the law allows for something — drinking, buying cigarettes, driving, voting, marrying, going into a bar. The exact age is never inside the word; it depends on the country and the activity, so a person can be underage for alcohol and old enough to drive on the same day.

Underage means younger than the age the law allows for somethingunderage的意思是比法律允許做某件事的年齡還小—— drinking, buying cigarettes, driving, voting, marrying, going into a bar像是喝酒、買菸、開車、投票、結婚、進酒吧。 The exact age is never inside the word這個確切的年齡從來不在這個字裡面； it depends on the country and the activity它要看國家和活動而定， so a person can be underage for alcohol and old enough to drive on the same day所以同一天，一個人可能對喝酒來說是underage，對開車來說卻已經夠年齡了。

It works two ways. It describes the person — underage drinkers, she is underage — and it also describes the act done by such a person: underage drinking, underage gambling, underage marriage. That second use is very common in news writing.

It works two ways它有兩種用法。 It describes the person它可以形容人—— underage drinkers, she is underageunderage drinkers（未成年飲酒者）、she is underage（她未成年）—— and it also describes the act done by such a person也可以形容這種人做出的行為： underage drinking, underage gambling, underage marriageunderage drinking（未成年飲酒）、underage gambling（未成年賭博）、underage marriage（未成年婚姻）。 That second use is very common in news writing第二種用法在新聞寫作裡非常常見。

Sport borrows it too, in a different, neutral sense: underage teams are age-limited youth teams, and being underage there is simply how you qualify.

Sport borrows it too, in a different, neutral sense運動領域也借用了這個字，是不同的中性意思： underage teams are age-limited youth teamsunderage teams指的是有年齡限制的青少年隊伍， and being underage there is simply how you qualify在那裡underage只是你符合資格的條件。

Usually written as one word; underaged appears but is much less common and looks wrong to many readers.

Usually written as one word通常寫成一個字； underaged appears but is much less commonunderaged這個寫法也會出現，但少見很多， and looks wrong to many readers在很多讀者眼裡看起來是錯的。