step ladder

同根派生

Having taken these precautions against surprise, he ascended to the top of the step ladder that he had laid against the door and sat down at ease.
做好这种戒备之后，他就爬到那座拦住门的短梯顶上，安心地坐了下来。
This paper introduces the basic concepts of states, State Procedure and Step Ladder Instruction and its application method in designing VMGC100 electric system.
介绍了状态元件,状态转移图和步进顺控指令的基本概念以及在VMGC100超精机电气系统设计中的应用方法。
Would the person who took the step ladder yesterday kindly bring it back or further steps will be taken.
昨天拿走梯子的人请速归还,否则主人将采取进一步措施。
A Study of Step Ladder Instruction Programming Method of PLC
可编程控制器步进指令编程的研究
Please go down the ladder and chuck up my hat.
请下梯子把我的帽子扔上来。