Tells at a glance different soils from each other.

但他一眼就能分辨出不同的土质。

About 5,000 years ago, earthwork enclosures known as henges began to appear.

约在 5000 年前，开始出现了被称为圆阵的土质围墙。

Most of this land was sold on the dream of land that couldn't support farms. We have very poor soils, compared to Southern Wisconsin.

这土地的多部分都卖了出去，但这里无法支持农场的运营。与威斯康星州南部相比，这里的土质很差。

Over an extensive area, the soil consisted of that igneous gravel called tuff, reddish in color as if made from crushed bricks.

土质在很长的空间上现出锗红色的凝灰岩，就像一层层的砖石构成的一样。

White agriculture is useful for places with poor soil quality since it makes the best use of both water and fertilizer.

白色农业非常适宜于土质较差的地方，因为它可以充分利用水和料。

The fertility of this plain derives from further west, from the Loess Plateau.

沃的土质来源于西方，即黄土高原。

As part of that effort, NASA's Jet Propulsion Laboratory has been operating rovers to collect Martian soil samples.

作为登陆火星工作的一部分，美国太空署的喷气推进实验室一直在使用探测器收集火星上的土质样本。

The soil's nature was still the same: volcanic.

地上的土质跟前面一样，是火山形成的。

Strung along these rough dirt airfields are right now several columns of shiny new aircraft, all emblazoned with the logo of the US Army Air Corps.

在这条粗糙的土质机场跑道上， 现在排列着几排崭新的飞机，上面都涂有美国陆军航空队的标志。

Some darker green tree-tops showed, and beyond them bits of the rim of earthen bluffs held up the prairie's grasses.

一些深绿色的树顶露出来了，在它们之外， 土质悬崖的边缘支撑着草原的草。

They're using the old, uncovered, earthen, nursery ponds.

他们使用的是旧的、无覆盖的、土质的育苗池。