Definition
to be old; often, too old to do something.
年絡大（通常不適合做某事）
Many players on this team are long in the tooth; they need some young blood.
這支球隊的許多球員都年紀較大，他們需要一些新鮮血液。
He is a little long in the tooth to be doing such physical work.
他年紀有點大了，不適合做這種體力活。
She felt she was too long in the tooth to pursue a new career.
她覺得自己年紀太大了，無法追求新的職業。