top floor
noun [ C ] uk/ˌtɒp ˈflɔːr/ us/ˌtɑːp ˈflɔːr/
（建筑）顶层
the highest level of a building
The penthouse apartment is on the top floor. 豪华顶层公寓位于大楼的顶层。
[ before noun ] a top-floor office 顶楼办公室
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