1·As it crashed down the steep mountainside like a gigantic snowplough, it swept up trees, boulders and tons of topsoil, and completely crushed and destroyed the six villages that lay in its path.
它像一台巨大的扫雪机一样冲下陡峭的山坡，卷走了树木、巨石和成吨的表土，将沿途的六个村庄彻底摧毁。
2·Calm and peaceful for most of the year, the Nile used to flood annually, thereby creating, irrigating and carrying new topsoil to the nearby farmland, on which ancient Egypt depended for livelihood.
尼罗河在一年的大部分时间里平静而祥和，过去每年都会泛滥，从而创造，灌溉并把新的表土运到附近的农田，古埃及赖以生存。
3·Angkor may have suffered problems common to modern times, including deforestation, overpopulation, topsoil degradation and erosion.
吴哥可能已经遭受过和现代相同的问题，包括滥伐森林，人口过剩，表土退化和侵蚀。
4·One major problem is that degraded soils become compacted and so absorb less water, which then tends to run off the surface, taking topsoil with it.
一个主要的问题是，退化的土壤变得密实，造成吸水量减少，从而导致水从地表流失并将表土带走。
5·Excavation generally starts with the separate stripping of the organic topsoil, which is later reused for landscaping around the new structure.
通常土方发掘先将有机表土分别挖除，竣工后还可将其用于新修建物周围景观工程。
1·When rechargeable batteries degrade in landfills, heavy metals can taint the surrounding air, topsoil and groundwater, eventually getting inside our bodies.
当可再充电电池在垃圾中被降级时，重金属能污染周边的空气，表层土和地下水。最终进入人体。
2·When it rains hard, landslides sweep topsoil down to the sea. This pushes fish farther out, beyond the range of the fishermen's modest boats.
如果下大雨，泥石流把表层土冲到海里去，而这些泥土又把鱼儿赶远了，渔夫们破旧的小船追不到鱼。
3·Tip: Butchart Gardens was originally an exhausted limestone quarry before it was covered with topsoil and transformed into one of the world's most beautiful gardens.
贴士：布查德花园原是一个荒废的石灰石采矿场，后来才盖上了表层土，变成了世界上最美丽的花园之一。
4·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。
5·When all the topsoil is gone, nothing remains but worthless deserted.
当所有的表层土就过去了，没有残余但毫无价值的空无一人。
1·Because of this increased concentration, regrowth of plants is minimal, leading to increased erosion, which leads to a decrease in the fertile topsoil, leading to even less regrowth.
由于浓度的增加，植物的再生长很少，导致侵蚀增加，使得肥沃的表层土壤减少，再生长更少。
2·Under flood conditions, great amounts of topsoil are washed to receiving streams.
在洪水泛滥时，大量表层土壤被冲刷到承受的水流中。
3·Straw mulching, cultivating and hoeing, regulating the root distribution in the topsoil are effective measures to reduce the soil evaporation.
秸秆覆盖、中耕锄划、调控表层土壤根系分布等可作为减少土壤蒸发的有效措施。
4·This topsoil tends to wash away.
表层土壤要冲掉了。
5·Drying or heating topsoil in commercial production is unnecessary because harmful microbes are ingested by beneficial microbes in healthy soil that is rich in organic matter.
在商业化生产表层土壤干燥或加热是不必要的，因为在健康的土壤，富含有机质有益微生物进入人体有害的微生物。
1·Changes of soil nutrients occurred mainly in the topsoil.
这些变化主要发生在土壤表层。
2·The amount of microorganism in topsoil was about 3 times higher than that in subsurface soil.
土壤表层微生物数量约为底层数量的3倍。
3·Ammonium and nitrate changed complexed. Spatial heterogeneity for topsoil moisture decreased after harvesting, however, which was largely affected by the vegetation growth seasonally.
土壤表层水分的空间异质性程度（基台值）在采伐后呈下降趋势，但受到草本植被季节性生长的强烈影响；
1·Thus, the different fertilization practices tended to(affect) not the depth distribution of TOC and POC but the content and proportion of POC in topsoil.
可见，不同的施肥处理并没有改变TOC和POC的深度分布格局，只是改变了它们在耕层土壤的含量以及POC的分配比例。
2·Red mud topsoil is a kind of product that can absorb a great amount of red mud and transfer it into secondary resources.
赤泥耕层土是一种大量消纳赤泥，同时又将其转化为二次资源的赤泥产品。