un·buckleBrE/ˌʌnˈbʌkl/NAmE/ˌʌnˈbʌkl/verbpresent simple - I / you / we / theyunbuckleBrE/ˌʌnˈbʌkl/NAmE/ˌʌnˈbʌkl/present simple - he / she / itunbucklesBrE/ˌʌnˈbʌklz/NAmE/ˌʌnˈbʌklz/past simpleunbuckledBrE/ˌʌnˈbʌkld/NAmE/ˌʌnˈbʌkld/past participleunbuckledBrE/ˌʌnˈbʌkld/NAmE/ˌʌnˈbʌkld/ -ing formunbucklingBrE/ˌʌnˈbʌklɪŋ/NAmE/ˌʌnˈbʌklɪŋ/~sthtoundothebuckleofabelt, shoe, etc.解开，松开（皮带、鞋子等）的扣