They were skeletons of strong criss-cross beams, with solid material between, coated with plaster.
2
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。
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.
3
右边护墙的铁件作十字形。
The iron supports of the well on the right form a cross.