名詞 rooftop:

1. the top of a (usually flat) roof

1. The patter of rain on the rooftops.
   屋頂上雨點的敲打聲
2. Multi-colored flags were flying over the rooftop.
   五彩繽紛的旗子在屋頂上飄揚。

roof.top

n.（名詞）
The outer surface of a roof.
屋頂?shù)耐獗砻?/br>n.attributive.（定語名詞）
Often used to modify another noun:
常用來修飾另一名詞：
例句：
rooftop gardens; rooftop tiles.
屋頂花園；屋頂瓦