名词
中文翻译：Unknown
同义词：
['tops clearing', 'top removal', 'top clearance']
例句：
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1. The top clearance of the roof is essential for ventilation.
屋顶的顶部清除对于通风至关重要。
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2. The top clearance of the building was cleared to make way for a new construction project.
为了进行新的建设项目，需要清除建筑物的顶部清除。
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3. The top clearance of the roadway needs to be maintained regularly to prevent accidents.
道路的顶部清除需要定期维护，以防止事故。