| 单词 | 层土壤 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔ABC soil〕Soil in which three distinct layers can be seen in vertical section.ABC层土壤：在垂直面上具有可视的三层不同土壤层的土壤美国传统〔illuviation〕The deposition in an underlying soil layer of colloids, soluble salts, and mineral particles leached out of an overlying soil layer.淀积作用：胶状物，可溶性盐和矿物微粒从上层土壤向下层过滤的沉淀过程美国传统〔leach〕The calcium, potassium, and magnesium ions are leached or washed out of the top soil into lower inaccessible subsoil.钙、钾和镁离子被滤出表层土壤流入低层土壤却无法被吸收。剑桥高阶〔permafrost〕Permanently frozen subsoil, occurring throughout the Polar Regions and locally in perennially frigid areas.永冻土：永久冰冻的下层土壤，出现在整个北极地区和部分长期寒冷的地区美国传统〔wash away〕This causes environmental damage when the topsoil is washed away by the rains.表层土壤被雨水冲走之后, 便会对环境造成破坏。外研社新世纪〔wash away〕This causes environmental damage when the topsoil is washed away by the rains.雨水冲走表层土壤会造成环境破坏。柯林斯高阶 |
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