名词
中文翻译：人孔梯子支架
同义词：
['manhole ladder bracket', 'manhole ladder support']
例句：
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1. Theengineer used a manhole ladder to inspect the underground pipelines.
工程师使用人孔梯子来检查地下管道。
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2. The construction crew installed a manhole ladder brace to reinforce the foundation.
施工队安装了人孔梯子支架来加固地基。
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3. The firefighters used manhole ladders to reach the top of the building and extinguish the fire.
消防员使用人孔梯子到达建筑物顶部，扑灭了火灾。