名词
中文翻译：Unknown
同义词：
['floor maintenance', 'surface maintenance']
例句：
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1. The groundkeepers are responsible for maintaining the cleanliness of the park's grounds.
园丁们负责维护公园地面的清洁。
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2. The construction crew is tasked with ensuring that the building's floors are properly maintained.
建筑工人被指派确保建筑物地板得到适当的维护。
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3. The city government has launched a campaign to improve the condition of public parks and their grounds.
市政府发起了一项活动，旨在改善公共公园及其地面的状况。