steppedadj.有阶梯的;梯形的动词step的过去式和过去分词形式.
steppen.(特指西伯利亚一带没有树木的)大草原;干草原
stepped spillway阶式溢洪道
stepped diameter等级直径
stepped starting分级起动
Steppe grassland典型草原
steppe formation干草原群系
stepped subgrade台阶式路基
steppe community草原群落
stepped flashing阶台式防漏盖板
stepped spinning错距旋压