名词
中文翻译：人孔框架
同义词：
['manhole cover', 'manhole door例句：1. The engineers were busy installing the manhole frame in the basement.（工程师们忙于在地下室安装人孔框架。）']
例句：
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1. The engineers were busy installing the manhole frame in the basement.
工程师们忙于在地下室安装人孔框架。
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2.The construction crew had to remove the old manhole frame before they could install the new one.
施工队必须先拆除旧的人孔框架，才能安装新的。
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3.The manhole frame was designed to be easily removable for maintenance purposes.
人孔框架设计为易于拆卸，便于维护。