柯林斯词典loess /ˈləʊɪs, lœs/ 1. N a light-coloured fine-grained accumulation of clay and silt particles that have been deposited by the wind 黄土 返回 loess剑桥词典a type of light brown or greyish soil , consisting of very small pieces of quartz and clay , that is blown and left behind by the wind 黄土（一种淡褐色或者灰色的土壤，由风力作用形成，由石英和黏土组成） 返回 loess