topsoil

As the crack gets bigger, the topsoil gently slumpsand develops into a sinkhole.

但裂缝增大时,表土下降之后形成大洞.

A thin layer of topsoil was swept away.

薄薄的一层表土被冲走了。

Erosion, the wearing away of topsoil by wind and rain, also contributes to water pollution.

侵蚀, 服装以外的表土被风和雨, 也有助于水污染.

Dust storms occur when intense grazing 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.

The three environmental trends —— the shortage of fresh water, the loss of topsoil and the rising temperatures —— are making it increasingly hard to expand the world's grain supply fast enough to keep up with demand.

当前的三大环境趋势——淡水资源短缺、表层土壤流失和气温不断上升——使得加速扩大粮食供应以跟上需求越来越难。

NPM separately increases hydrolysable N, aminoacid N and amino sugar N in topsoil by 192.58 mg/ kg, 223.44 mg/ kg and 25.66 mg/ kg, but ammoniacal N content is decreased.

NPM处理土壤耕层水解总氮与对照相比增加192.58mg/kg、氨基酸氮增加223.44mg/kg、氨基糖氮增加25.66mg/kg，而氨态氮含量则大幅度降低；

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年的时间才能形成一英寸厚的表层土壤.

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.

Topsoil excavated from the work site shall be applied onto the gabions.

从工地挖出的表土须用于筑堤的石笼上.

Topsoil from different soil types shall be stockpiled separately and replaced in the same areas taken.

不同类型的表层土壤应分开储存,更换时也应置放于取土的同一区域.

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.

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.

Only 20 samples were not polluted among the 86 samples of 0~20 cm topsoil.

在86个耕层土样中,只有20个样点没有受到铅污染.

Magnetic Susceptibility Characteristic and Its Environmental Significance in Urban Topsoil around the East Lake, Wuhan, China

武汉市东湖周边近地表土壤磁化率特征及其环境意义

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.

Changes of topsoil P contents were gently in the trial orchard during the whole year, P contents were 0.2%~ 0.3%, and in the state of scarce;

本试验园片耕层土壤含P量全年变化平缓，在0.2%～0.3%的范围内，处于比较缺乏的状态；

In ABC soil, the uppermost zone of soil , containing humus ; topsoil.

位于 上层 土和岩床之间的一层土壤.

Here a dry spell meant parched crops, a rainy spell, loss of topsoil.

过去这里,一有干旱庄稼就会枯死, 一下雨浮土就会流失.

When the black topsoil was all washed away, farmers moved westward and started new plantations.

当表层黑土全部被冲走之后, 农民们就向西部转移,建立新的种植园.

The auxiliary shaft topsoil adopted ordinary construction and drainages in hygrometric well.

屯留煤矿副井井筒表土段采用普通法施工,利用井外降水井疏干降水.

Floods can remove fertile topsoil and begin a process resulting in the loss of planting areas.

洪水可以带走肥沃的表土层,最终导致种植区域的损失.

When all topsoil is gone, nothing remains but a worthless desert.

当表层土流失后, 就只剩下一片无用的沙漠.

The topsoil has been almost completely washed away.

表层土壤已差不多完全给冲走了.

Do you know what topsoil is made of?

你知道表土是由什么构成的 吗 ?

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.

The soils here are sandy and dominated by gravel topsoil.

那里的土壤是沙质化的,绝大部分是砂砾表层土.

This topsoil tends to wash away.

表层土壤要冲掉了.

In many countries the loss of productive topsoil has contributed to growing food deficits.

在许多国家里,生产性表土的流失已导致日益严重的粮食短缺.

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。

No other animal is so useful in building up good topsoil.

蚯蚓对制造优良的表层土壤所起的作用是其他任何动物都比不上的.