炒冷饭
Stir-fry leftover rice.

【发音】chǎo lěng fàn

【释义】比喻总是翻来覆去重复过去说过的话或做过的事。
            Say or do the same old thing; dish up the same old stuff.

【例1】我们讨论了一些很早以前发生的事，实在是“炒冷饭”，毫无意思。
           We discussed some incidents that had happened long ago. It was really flogging a dead horse.

【例2】他的第二本书只是他自己第一本书的“炒冷饭”作品而已。
           His second book is just a rehash of his first.