他们都是敦煌的守护者,都是文化传承人。 For thousands of years, the vast desert, the continuous camel bells, every inch of space in Dunhuang are filled with color and dreams. Here, each grain of sand gravel carries the story of history, and each...
cobble 卵石 gravel 砾石 sand砂 silt粉土 clay粘土 sandy clay 砂质粘土 clayey sand 粘质砂土 sandy loam 壤土、亚黏土 regolith(topsoil)浮土(表土) loess 黄土 laterite 红土 peat 泥炭 ooze软泥(海泥) 四、岩矿物理性质 hardness 硬度 luster 光泽 color...