n. steps consisting of two parallel members connected by rungs; for climbing up or down
n. ascending stages by which somebody or something can progress
v. come unraveled or undone as if by snagging
n. 梯, 梯状物, 发迹的途径
vi. 袜子抽丝, 成名
1. I need a ladder to reach the roof.
我需要一把梯子才能到达屋顶。
2. Be careful when you climb the ladder.
爬梯子时要小心。
3. He used a ladder to paint the walls.
他用梯子来给墙壁上漆。