1 COMB in ADJ （与数字连用构成表示概数的形容词，尤其用于指人的年龄）表示“…几”，“…多” -something is combined with numbers such as twenty and thirty to form adjectives which indicate an approximate amount, especially someone's age. For example, if you say that someone is thirty-something, you mean they are between thirty and forty years old. （与数字连用构成表示概数的形容词，尤其用于指人的年龄）表示“…几”，“…多”

2 COMB in N-COUNT （二十）几岁的人；（三十）多岁的人 People of a similar age range are sometimes referred to as, for example, twenty-somethings or thirty-somethings . （二十）几岁的人；（三十）多岁的人 [journalism]