层报
层报 céngbào
[report to higher authorities through proper channel (step by step)] 逐级地向上报告
层céngㄘㄥˊ 重(chóng):~云。~峰。~浪。~叠。 重复地:~出不...
报bàoㄅㄠˋ 传达,告知:~告。~喜。~捷。~考。~请(用书面报告...