ROI缩写的意思

B.RM AIE WP ALR AC PE AD ABC B.Eng.Mgt HKUST ADELAIDE ROI SWJTU DILS BL RA AAU UofMELB CTC PG NJTV NSA CFR ORC AJED B.Eng M.I.E. TESOL CBC UD MCAT TA DNA OP MSME OT LA M.A.Ed AQ UQ B.S.Ed UC MJ BEC ME BAEE XQ TWE M.Ec. PTT DT ADIDA CLEP HE ESP AAS WD TFF A-level AR