单词topsoil
n.: 表土；表土层
网络: 表层土；上层土；耕层
表土；表土层:
the layer of soil nearest the surface of the ground
植物生长层
耕层
土壤上层
上层土;表层土
表土;耕作层土壤
表土,表层土壤,表面土壤
过去分词：topsoiled
现在分词：topsoiling
第三人称单数：topsoils
n.soilearthloamdirtpeat
The difficulty of the remediation technology was that the topsoil of the site is sticky, small particle size and severely polluted.
铬渣污染场地的表层土壤由于粘性大、粒径小且污染严重成为治理的难点。
A week later, no smell could be detected as the workers tamped down a final layer of topsoil.
一周以后，当工人将最上层的表层土夯实以后，臭味就消失了。
With hoes and axes, they crafted flat, wide terraces and a simple water-management system that would keep valuable topsoil in place.
手拿锄头和斧子，他们精心的建造出自己的平地，梯田，和简单的水处理系统，这样可以保持住最肥沃的表层土不要流失。
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。
Where there are no trees the rain falls on the surface, causing floods, and carries away with the rich topsoil, in which crops grow so well.
那里没有树雨点落在表面，形成的洪水，而携带带走了丰富的表层土，庄稼长得这样好。
After shoveling out the topsoil, Garfinkel uncovered coins and other artifacts from the time of Alexander the Great.
在铲去了表层土以后，加芬克尔发现了来自亚历山大大帝时期的硬币和其他人工制品。
The fragile land quickly lost its topsoil and became nothing but sand and dust.
那单薄的土地很快就失去了表土，成为沙粒和尘埃。
Aerodynamics roughness length is one of important indexes for estimating topsoil erosion.
耕作土壤表面空气动力学粗糙度是评价土壤可蚀性的重要指标。
Conserving the earth"s topsoil by reducing erosion to the rate of new soil formation or below, involves two principal steps.
通过将地球表层土的受侵蚀速度降低到新土形成的速度甚或更低，来保护表层土，其中包括两个关键步骤。
Satellite images show a steady flow of dust storms leaving these regions, each one typically carrying millions of tons of precious topsoil.
卫星图像显示，沙尘暴连绵不断地离开这些地区，每次都带走无数吨原有的表土层。