Part of the roof has caved in.

部分屋顶已经坍塌了。

《柯林斯英汉双解大词典》

These beams, known as la foret (the forest) because of their density, formed the cross-shaped roof that ran the length of the central part of the cathedral.

这些因其密度而被著称为 la foret（森林）的梁，组成了横跨大教堂中心部分的十字形屋顶。

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They built planters and paved part of the roof so people can walk easily among the plantings.

他们搭设了植物蔬菜架，并且铺平了部分屋顶，使人们可以轻松地在屋顶上步行和种植。

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Lashing winds also blew off part of the roof of a Stone Harbor, N.

WSJ: Snowstorm spares DC, heads toward New England

Several roads in Cowdenbeath have been closed after part of the roof of a building blew off.

BBC: RELATED BBC SITES

It spared the walls and part of the roof, then moved on to raze the house next door.

CNN: In El Reno, a tornado 'looking at us dead in the eye'