雅思写作最新范文：砖块的制作
本文来自雅思作文网liuxue86.com《砖块的制作》。 The process by which bricks are manufactured for the building industry can be outlined in seven consecutive steps. First the raw material, clay, which was just below the surface of soil in certain clay-rich areas has to be dug up by a digger. Then the lumps of clay are placed on a metal grid in order to break up the big chunks of clay into much smaller areas, which fall through the metal grid onto a roller, whose motion further segregates the bits of clay. Sand and water are added to make a homogenous mixture... [ 查看全文 ]雅思写作最新范文：砖块的制作的相关文章
