/ˈkælɪpə(r) ||; ˈkæləpɚ/(
especially US 尤为美 caliper)
noun 1 callipers [pl] (mathematics数学) an instrument with two long thin parts joined at one end, used for measuring the DIAMETERof tubes and round objects(= the distance across them) 卡钳；卡尺
2 (US 美 brace) [C] [usu.pl] a metal support for weak or injured legs 双角规形夹（用于支撑无力或受伤的腿）