当你在公园散步,曲折的混凝土嵌花小路,把你引向那幽静的绿树丛中的时候;当你在葱绿的田野,看见轻巧的双曲拱钢筋混凝土渡槽把淙淙流水引向万倾良田的时候;当你乘车飞驰在雄伟的钢筋混凝土大桥上的时候;当你漫步街头,看到那一幢幢高楼大厦的时候……你思索过没有,这一切都离不开一种神奇的粉末——水泥所起的巨大作用。水泥是一种细微的灰色粉末,给予它适量的水后,它能把砂子、石子和钢筋这几种风马 When you walk in the park, the tortuous concrete intarsia path leads you to the secluded green trees; when you are in the lush fields, you see the light double-arched reinforced concrete aqueducts that lead the turbulent water to the sky When you are in good farmland; when you are driving on a majestic reinforced concrete bridge; when you stroll through the streets and see that tall building... you think about it, it’s all inseparable from a magical Powder - the great role played by cement. Cement is a subtle grey powder. After giving it the right amount of water, it can put sand, stones, and rebar into the wind.