with obj.
1- put (old ideas or material) into a new form without significant change or improvement缺乏创意地改写（或改编）; 缺乏新意地重弹（老调）：
he endlessly rehashes songs from his American era.
他不断了无新意地改编自己美国年代的歌曲。
1.1
- chiefly N. Amer. consider or discuss (something) at length after it has happened〈主北美〉事后反复回想, 事后反复议论：
is it really necessary to rehash that trauma all over again?
真的有必要老是重提那旧创伤吗？
- a reuse of old ideas or material without significant change or improvement（对旧想法、材料的）重复使用。