de·trainBrE/ˌdiːˈtreɪn/NAmE/ˌdiːˈtreɪn/verbpresent simple - I / you / we / theydetrainBrE/ˌdiːˈtreɪn/NAmE/ˌdiːˈtreɪn/present simple - he / she / itdetrainsBrE/ˌdiːˈtreɪnz/NAmE/ˌdiːˈtreɪnz/past simpledetrainedBrE/ˌdiːˈtreɪnd/NAmE/ˌdiːˈtreɪnd/past participledetrainedBrE/ˌdiːˈtreɪnd/NAmE/ˌdiːˈtreɪnd/ -ing formdetrainingBrE/ˌdiːˈtreɪnɪŋ/NAmE/ˌdiːˈtreɪnɪŋ/[I, T]~ (sb)(formal) toleaveatrainormakesbleaveatrain（使）下火车