AD缩写的意思

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