多少钱 c n lun wen qi kan duo shao qian yi pian
多少钱 e i lun wen qi kan duo shao qian yi pian
发表论文 fa biao yi pian qi kan lun wen duo jiu
fa yi pian qi kan lun wen duo shao qian
mai yi pian qi kan lun wen duo shao qian
刊发 qi kan fa yi pian lun wen duo shao ye