returncost回购成本returnv.返回；归还；回报；回应；申报n.归还；返回；（收益)回报；申报returned materials report退料报告return and reconstruction回归与重建Return of The Undead King不死国王再现return farmland to forest退耕还林return-to-zero coding归零编码return-to-service rate再发情Return to the native place返回故里return from the conference开会回来Returning straw into field秸秆还田return current coefficient反向电流系数