... ladder dredger 多斗挖掘船 ladder landing 梯子平台 ladderway 梯子间 ...
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ladder landing platform 小梯台
landing ladder 着陆梯
If a ladder cannot be secured, then ask someone to hold it firmly for you. Ladders should extend at least 1m above landing.
l 如果梯子不稳,请同事帮忙扶紧。梯子顶端必须超出爬升落脚点至少1米。
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