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老書生經常說的話。比喻人們聽厭了的沒有新意的話。
出自《三國志·魏書·管輅傳》。
「這些道理雖然是老生常談,卻很有道理。」
Data source: Ministry of Education Idiom Dictionary (data.gov.tw, OGDL). For reference only.
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