详细解释:vt. 重讲, 改头换面地重复
n. 改头换面的作品
词型变化：
动词过去式:rehashed过去分词:rehashed现在分词:rehashing第三人称单数:rehashes英语解释：
名词 rehash:
old material that is slightly reworked and used again动词 rehash:
present or use over, with no or few changesgo back over同义词：retrograde, hash over