steppa干草原stepn.步骤；台阶；舞步；步伐v.踏；以步测量Step Up Performing Arts Center踩跳表演艺术中心stepless speeding- adjusting无级调速Step hole trim retaining block踏板孔饰物固定块Step through the loop again.再次单步执行循环。Step up monitoring of services加强服务的监察Stepwise discriminate analysis逐步判别分析step-variable capacity costs[经] 阶梯变化能力成本stepwise discriminatory method逐步判别法stepwise polynomial regression逐步多项式回归step-by step B board dialing步进制B台拨接法