stepit跳舞stepn.步骤；台阶；舞步；步伐v.踏；以步测量step-bar test piece[机] 梯形试片stepping stone method起脚石法step-pulsed welding步进脉冲焊Stephania dolichopodan.大叶地不容step-down operation下降操作step-like landforms层状地貌step oxide-bypassed阶梯氧化边step off the deep endvi.仓促上阵(死)step frequency signal步进频率信号Stephania hainanensisn.海南地不容