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- Heavy rains washed the topsoil away. 大雨把表层土冲蚀掉了
- The topsoil has been almost completely washed away. 表层土壤已差不多完全给冲走了。
- Worse still, the storm washed the topsoil from the hillside. 更糟的是,暴风雨把山坡上的表土冲走了。
- When all the topsoil is gone, nothing remains but worthless desert. 当表土层都被冲走后，就只留下沙漠了。
- On the wide level acres of the valley the topsoil lay deep and fertile. 在山谷中广袤平坦的大地上，覆盖着厚实肥沃的土层。
- Worse still, the annual torrential rains washed the topsoil from the hillside. 更糟的是，每年都有暴雨把浮土从山坡上冲走。
- Worse still,the annual torrential rains washed the topsoil from the hillside. 更糟的是，每年都有暴雨把浮土从山坡上冲走。
- It would appear that the inputs are insufficient to offset the mobilization and leaching of calcium from the topsoil. 钙的转入量看来不足以补偿从表土中活化和淋失的钙。
- If the topsoil is taken away by erosion, plants can no longer grow in the soil left behind. 如果因水土流失而冲掉了表土，植物不能再在留下的土壤中生长。
- So the topsoil is bits of rock mixed with things that are once alive. These things in the topsoil that were once alive are called humus. 可见，土壤是石粒和曾经是活体的物质的混合物。表土中这种曾是活体的东西叫做"腐殖质"。
- Dust storms occur when intense grazing strips pastureland of new growth, leaving the topsoil vulnerable to winds. 当密集的放牧导致新长好的牧草被啃光，让地表土容易被风刮走，沙尘暴就发生了。
- A chisel plow, meanwhile, only fractures the topsoil and preserves more surface residue. 用凿犁耕田则只会松开表土，保留较多的作物残株。
- A planting experiment showed that planting Suaeda salsa decreased salt content in the topsoil effectively,an... 研究证明碱蓬是一种耐盐能力很强的盐生植物,对滨海盐渍土具有显著的改良作用。
- The wind whirled the dead leaves about. 风吹得枯叶在四处回旋。
- The activities are high in the topsoil and low in the subsoil, decrease from rhizoplane soil to root-free soil for all three enzymes. 从表层土向下,由根表土向外,碳矿化速率及其相关的各种酶活性均呈下降趋势。
- The wind was whispering in the trees. 一阵风穿过树林沙沙作响。
- There are 26 letters in the English alphabet. 英语字母表中有26个字母。
- Brother Tian said that his familys ploughing efforts turned up only dry soil, and the topsoil in the fields was easily blown away by the wind. 田师兄说,翻地都只翻出乾土来,田里的表土一见风就四处飞扬。
- Foreign nationals were asked to leave the country. 外国侨民被要求离开该国。
- A cloud is a mass of vapor in the sky. 云是天空中的水汽团。
