warm something over
phrasal verb with warm verb [ I or T ] uk/wɔːm/ us/wɔːrm/
US disapproving
再次使用（已用过的办法）；对…老调重弹
to use an idea that has been used before or to discuss a subject that has already been discussed before
Voters are bored with politicians warming over old policies. 选民们已经厌倦了政客们对老的政策旧调重弹。