一改再改

    yīgǎizàigǎi

    1. Verbto change (something) repeatedly

    这个设计一改再改,还是没有让客户满意。Zhège shèjì yīgǎizàigǎi, háishi méiyǒu ràng kèhù mǎnyì.The design was revised repeatedly but still failed to satisfy the client.