- access platforms, walkways, stairs
- 栏杆: handrail; balustrade; railin ...
- 与: take part in; participate in
- 梯子: ladder; stepladder
- 栏杆: handrail; balustrade; railing; banisters; rail◇栏杆钢 [冶金学] hand railing steel; 栏杆木 balaustre; 栏杆柱 newel post; rail post; baluster
- 吊杆与戽斗: boom and bucket delivery
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