topsoil

过去式：

动词过去式: topsoiled

更多词形：

动词过去式: topsoiled | 动词过去分词: topsoiled | 动词现在分词: topsoiling | 动词第三人称单数: topsoils |

单词例句：

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。

Thus the farmer is helping nature rebuild the topsoil that holds the rain, resists the wind and provides food for growing plants.

因此，农民是协助大自然重建能够存蓄雨水、抵抗风力和滋养各种植物的表面土壤。

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。

Topsoil is being lost to erosion, and arable land is being lost to desert, to salinization, and to urbanization.

表层土因为侵蚀而正在失去，可耕种的土地正在变成沙漠，被盐化，被城市化。

According to scientists, it takes nature 500 years to create an inch of topsoil.

根据科学家们的看法，自然界要用500年的时间才能创造一英寸的表层土壤。

When digging a hole for planting, one should put topsoil and subsoil in two different sides of the hole.

在挖栽植坑时，应将表土和底土分别放在坑的两侧。

Effect of nutrient management on selected topsoil characteristics of a basalt derived Ferralsol in Dak lak ,Vietnam.

表5 养分管理对达拉克(Daklak)一种玄武岩发育的铁铝土基本些表土层性质的影响 Table 5.

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。

Loess is easy borne by the wind and may be carried long distances before it falls to earth and becomes topsoil.

黄土易被风刮起并带至远处方才落下成为表土层。