zhǎng / bèi / jiàn / miàn / shí / cháng / yòng / guì / gēng / lái / lǐ / mào / de / xún / wèn / duì / fāng / de / nián / líng

长辈见面时，常用“贵庚”来礼貌地询问对方的年龄。

When elders meet, they often use “贵庚” to politely ask someone's age.