It consists of four planks nailed to two cross-beams, on which the scars of the attack are visible.
那是钉在两条横木上面的四块木板，攻打的伤痕还看得出。
2
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。
3
They were skeletons of strong criss-crossbeams, with solid material between, coated with plaster.