词语

宵衣旰食天不亮就穿衣起床天晚了才吃饭，形容工作繁忙而勤勉。例宵衣旰食忧六宫之未安；寒心销志惧一物之失所。——唐李世民《命皇太子监国诏》英getting up before dawn and eating late—busy with state affairs;