ladder
英 ['lædə]
美['lædɚ]
	    - n. 阶梯;途径;梯状物
 - vi. 成名;发迹
 - vt. 在……上装设梯子
 
英英释意
- 1. steps consisting of two parallel members connected by rungs; for climbing up or down
 
- 2. ascending stages by which somebody or something can progress;
 - "he climbed the career ladder"
 
- 3. a row of unravelled stitches;
 - "she got a run in her stocking"