STEPSn.太阳热离子电源系统（=Solar Thermionic Electrical Power System ）；台阶，步骤（名词step的复数形式）stepn.步骤；台阶；舞步；步伐v.踏；以步测量step invasion阶跃侵入Stephan Caron卡隆step daughter继女steppage gait跨阈步态step upstairs上楼梯stepwise seal[化] 台阶式密封step-on can脚踏污物桶Stephanolepasn.王冠藤壶属Stephanolepisn.细鳞鲀属step aerobics上下踏步有氧运动