rooftree
n. 栋梁, 屋顶
例句与用法:
The patter of rain on the rooftops.
屋顶上雨点的敲打声
Multi-colored flags were flying over the rooftop.
五彩缤纷的旗子在屋顶上飘扬。
n.
1. 屋脊梁
2. 家