rr缩写的意思

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