Farmers worked the fertile valleys.

农民们开垦了这个肥沃的山谷。

We have the most fertile soil in the Midwest.

我们在中西部有最肥沃的土壤。

The operation cannot be reversed to make her fertile again.

手术不可逆转，无法使她重获生育能力。

To the north lie the flat and fertile farmlands of Nebraska.

北面是内布拉斯加州平坦肥沃的农田。

They used force to banish the natives from the more fertile land.

他们用武力将土著人驱逐出更加肥沃的土地。

Horton looked out over a panorama of fertile valleys and gentle hills.

霍顿眺望着那一片肥沃山谷和平缓山脉的景象。

The treatment has been tested on healthy fertile women under the age of 35.

这个疗法已对35岁以下能生育的健康妇女进行了试验。

I saw a dark brown fertile field in which a plough was cutting large furrows.

我看到一块深褐色的肥沃田地，那里耕犁正犁出宽大的犁沟。

It is fertile and productive.

它肥沃多产。

The land is not fertile enough to repay cultivation.

这块土地不够肥沃， 不值得耕种。

Forests are eating away the fertile farmland worldwide.

森林正在吞噬世界各地的肥沃农田。

A good class is a fertile soil in which the student grows.

一个好的班级体是学生成长的沃土。

Both places had vast areas of fertile farmland, no shortage of agricultural land.

这两个地方都有大片肥沃的农田，不缺耕地。

To their delight, they feel that this makes the soil in their fields richer in minerals and so more fertile.

令他们高兴的是，他们觉得这样可以使田地里的土壤富含矿物质，更加肥沃。

The United States is a land rich in mineral resources and fertile farm soil, together with a moderate climate.

美国具有丰富的矿产资源和肥沃的农田，气候温和适中。

Burning the forest just once can leave behind enough black carbon to keep the soil fertile for thousands of years.

森林仅仅燃烧一次就能留下足够的黑碳，来保持数千年土壤肥沃。

His hope now: that the cries for reform will provide more fertile soil for his long-standing messages about business ethics.

他现在希望的是：改革的呼声能为他长期以来关于商业道德的主张提供更肥沃的土壤。

Bruno Glaser, a soil scientist of the University of Bayreuth, has studied unexpected patches of fertile soils in the central Amazon.

拜罗伊特大学的土壤科学家布鲁诺·格拉泽研究了亚马逊中部几块出人意料的肥沃土壤。

Land that was once at the bottom of the sea now lies around the town in wide, fertile fields; where crabs once crawled, donkeys pick their way.

曾经是海底的陆地现在成了城镇周围广阔肥沃的田野；这里曾经有过螃蟹爬行，现在则有驴子择路而行。

Some regions of the world are well supplied with coal and minerals, and have a fertile soil and a favourable climate; other regions possess none of them.

世界上有些地区煤炭和矿产供应充足，土壤肥沃，气候宜人；而其他地区则不具备这些条件。

For centuries, the annual floods of the Nile, Tigris, and Euphrates, for example, have brought fertile silts and water to the inhabitants of their lower valleys.

比如，几个世纪以来，尼罗河、底格里斯河和幼发拉底河每年的洪水给下游山谷的居民带来了肥沃的淤泥和水源。

According to this definition, one species is distinguished from another by the possibility of matings between individuals from each species to produce fertile offspring.

根据这一定义，区分不同物种的标准是不同物种的个体间相互交配产生可育后代的可能性。

Afterwards during the season of subsidence, the water would subside, or recede, revealing a new layer of fertile black silt and allowing for the planting of various crops.

在随后的沉降季节，水会退去，并露出一层新的肥沃的黑色淤泥，可以在这上面种植各种作物。

Once the humus layer disappears, nutrients cannot be recycled and leach from the soil, converting soil from fertile to infertile and making it suitable only for savanna vegetation.

一旦腐殖质层消失，养分就无法从土壤中回收和过滤，致使土壤由肥沃变为贫瘠，只适于热带草原植被的生长。

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。

Few people are as fertile as in the past.

很少有人能像过去那样生那么多孩子。

In our always-connected world, boredom may be a hard-to-define state, but it is a fertile one.

在我们万物互联的世界中，无聊也许是一种很难定义的状态，却也是一种丰富的状态。

Above them you could see green and fertile pastures, till at last the stony boulders reached the bare, steep cliffs.

在它们上面，你可以看到绿草肥盛山坡，直到最后乱石丛生的灌木丛延伸到光秃秃的陡峭石山。

In still-fertile America it currently accounts for about 40% of total population growth, and in fast-ageing western Europe for about 90%.

在人口仍然年轻化的美国，它目前占总人口增长的40%，而在快速老龄化的西欧，这一比例约为90%。

Popular literary satires on marriage had already landed on fertile ground in a multiethnic population that embodied a wide range of marital beliefs and practices.

关于婚姻的通俗讽刺文学在多民族人口中已经落地生根，体现了广泛的婚姻信仰和习俗。