Tells at a glance different soils from each other.

但他一眼就能分辨土质。

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

大约在 5000 年前，开始现了被称为圆阵土质围墙。

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

肥沃土质来源于西方，即黄土高原。

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

地上土质跟前面一样，是火山形成。

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

作为登陆火星工作一分，美国太空署喷气推进实验室一直在使用探测器收集火星上土质样本。

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地方，因为它可以充分利用水和肥料。

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

他们使用是旧、无、土质育苗池。

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

土质在很长空间上现锗红色凝灰岩，就像一层层砖石构成一样。

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

一些深绿色树顶露来了，在它们之外， 土质悬崖边缘支撑着大草原草。

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.

这片土地大多分都卖了去，但这里无法支持农场运营。与威斯康星州南相比，这里土质很差。

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.

在这条粗糙土质机场跑道上， 现在排列着几排崭新飞机，上面都涂有美国陆军航空队标志。