Tells at a glance different soils from each other.

但他一眼就能分同土质。

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。

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 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部分，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。

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， 土质悬崖撑着大草原草。

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。

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.

这片土地大多部分都卖了去，但这里无法持农场运营。与威斯康星州南部相比，这里土质很差。

It's hard to pinpoint exactly when they began making rock art, but crayons made of ochre, a brownish-reddish earth pigment, have been found there that date to around 50,000 years ago.

很难确定他们是从什么时候开始制作岩画，但在那里发现了大约 5 万年前用赭石制成蜡笔，这是一种棕红色土质颜料。

The team concluded that as the level of Wixom Lake rose that fateful May evening, it  increased the hydraulic load on the embankment, putting more stress on the earthen structure than  it had ever been asked to withstand.

研究小组得结论是， 随着威克瑟姆湖水位上升，堤坝上水力负荷也随之增加，土质结构承受压力超了以往承受能力。