短语词组短语Heel -and-Toe Wear 锯齿状磨损biped heel -and-toe robot 双足竞步机器人heel -and-toe walking 竞走HEEL -AND-TOE POLKA STEP 踵趾波尔卡步;踵趾扑克步;踵趾交换跳步Semi -rigid heel and toe reinforcement 半刚性脚跟和脚趾加固 返回 heel and toe