词语拼音：lǎo shēng cháng tán
词语解释：老生常谈 lǎoshēng-chángtán
[be trite and commonplace;common talk of an old scholar;commonplace;platitude; standing dish; sunday schools truth; twice-told tale] 原义为年老书生的平凡议论,泛指经常说起的老话
邓颺怒曰:“此老生之常谈耳!” 辂曰:“老生者见不生,常谈者见不谈。”——《三国演义》