短语词组短语loess lime soil 黄土灰土Loess like soil 拟黄土loess -ancient soil 黄土古土壤系列loess salted soil 黄土状盐渍土;黄土状盐渍土的collapsible loess yellow soil 湿陷性黄土water -collapsible loess-soil 湿陷性大孔土 返回 loess soil