wharf ladder

例句：

1. 1. The workers were busyfixing the wedge of woodon the wharf.
   工人们正在忙着修理码头上的木板。
2. 2. The constructioncrew had to climb up the ladder toreach the top of the scaffolding.
   施工队不得不爬梯子到达脚手架的顶端。
3. 3. The old man was using awedge to pry open the door, and he needed the ladder to getup to it.
   老人用楔子撬开门，他需要梯子才能上去。