vellum board造句

• Some of the numbers related to the building of the stadium are impressive : the development of the project required 370 vellum boards; five months were consumed in earth moving and excavation; a stream was redirected by the movement of 340 cubic metres of earth; the volume of concrete used was equivalent to the construction of 83 10-storey buildings; 280 million sacks of cement were used ( if placed side by side they would cover the distance from S鉶 Paulo to Rio de Janeiro ); and 50, 000 tons of iron were used ( which would circle the Earth two and a half times ).