Third toe第三趾thirdnum.第三；三分之一adj.第三的；三分之一的third-brush type generator三刷式发电机third-party authentication第三方认证third-order cumulant slice三阶累积量切片third-faucet configuration第三龙头构型Third-party online payment第三方在线支付third boundary value problem第三边值问题third trimester of pregnancy妊娠末期,妊娠晚期,妊娠末三月Third Layer Switch Equipment三层交换机third-level undergraduates“本三”学生third undergraduate colleges三本院校