积日累月

Explanation: That after a long time. With the "Jinian put the years." 　　Source: Anonymous Song "Jingkang to record" Volume: "If product at put the years, the micro-million machine, the missing words can win Yeah!" 　　Examples: Classical Poetry from time to choose the deposit of the Arts ~, or not to transfer, by order may transfer and also do not have to pass. Qing Xie by ★ "<said Wen Tong training _set_ sound> postscript"