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approximate age; apparent age
marriageable age (esp. of a woman); age of maturity; age of adulthood
age (when ...)
彼女は年ごろの割に落ち着いた雰囲気がある。
She has a calm demeanor considering her age.
年ごろの娘を持つ親として心配が絶えない。
As a parent with a daughter of marriageable age, the worries never end.
年ごろになると友人関係も複雑になってくる。
As one reaches a certain age, friendships become more complex.