未老先衰
appearing middle-aged at an unusually early age
在还年轻时就感觉或看起来像中年人
是中年人
to have reached the stage of middle age
已达到中年阶段
看起来像中年人
to have the appearance of a middle-aged person
外表看起来像个中年人
感觉自己人到中年
to perceive oneself as being middle-aged
感觉自己是中年人
步入中年
to transition into the period of middle age
过渡到中年时期