There was no floor in this tunnel: you had to step from rafter to rafter, and between them there was only plaster.
隧道里没有地板，你必须从一根椽子到另一根橡子，椽子之间只有灰泥。
2
The original walls were treated with a lime-colored paste and pulled to iron plaster on the example of the ancients XV centuty plasters , the floor slabs too, were treated with lime.
在十五世纪的石膏例子中，墙壁用石灰浆处理，被拉到铁石膏处，地板也用石灰处理。
3
The ground floor is made from a combination of cast in-situ concrete and cement blocks, which have been covered in white plaster.