A robot would then pick up rocks and soil, and send them back to earth for testing.

VOA: special.2010.05.25

As Hanson points out, look at the difference between this and previous ways of working the soil.

正如汉森所指出的那样,比较此方式和旧有耕作方式的不同你就会发现

耶鲁公开课 - 古希腊历史简介课程节选

In Mesopotamia they usually didn't need to because the richness of the soil and so on.

在美索不达米亚,由于土壤肥沃及其他因素,通常是不需要施肥的

耶鲁公开课 - 古希腊历史简介课程节选

We will tell about a new way to recognize harmful minerals in rocks and soil.

VOA: special.2009.11.17

Soil was being eroded and wasted along the Eastern seaboard, and they were using up the great soils of the Mississippi Valley and over time that slave system just somehow wasn't going to work out.

东部沿海地区的土地因被侵蚀而荒废掉,密西西比河谷地区的土地资源即将被耗尽,但就在这种情况下,奴隶制依然能维持南方的经济

耶鲁公开课 - 美国内战与重建课程节选

They collected more than thirty kilograms of rock and soil to take back to Earth.

VOA: special.2009.07.15

We see him, a nobleman that he is, former king that he is, working the soil and how he does this is very illuminating, because he is clearly, according to Hanson, involved in the period after the transition away from an earlier style.

我们所看到的他,出身贵族,履职前任国王,耕种土地,他所作的一切都具有启蒙意义,因为,根据汉森所述,他无疑身处在一个向古风时期,转型的早期年代

耶鲁公开课 - 古希腊历史简介课程节选

A piece of sod has grass on the top and soil on the bottom.

VOA: special.2009.07.07

Still,asbestos develop naturally in rocks and soil in some areas.

VOA: special.2009.11.17

Engineers have found that wetlands, grassy fields and soil or sand filters can take in stormwater with different levels of pollution and release water with a relatively constant cleanliness.

VOA: standard.2010.08.04

They conducted several experiments, gathering up lunar rocks and soil.

VOA: standard.2009.07.16

Think about growing cabbage if you live where the weather is cool and the soil is moist and fertile.

VOA: special.2009.03.03

Experts say warm days, cool nights and a medium soil temperature are the best conditions for growing carrots that taste great.

VOA: special.2009.02.24

The water is collected through two holes and in the holes there is a siphon to carry it to the soil.

VOA: special.2010.07.13

He says the substances are especially dangerous because they travel through the air and stay in the atmosphere, soil and water.

VOA: special.2009.06.23

Fabian Fernandez, a soil and plant nutrition expert at the University of Illinois, says no-till means less intensive labor.

VOA: special.2010.09.28

If possible, in the year before you plant potatoes, plant a cover crop to improve the soil and the potato production.

VOA: special.2009.03.10

To improve clay soils, mix in garden waste or other organic matter and turn the soil deeply in the fall.

VOA: special.2009.03.10

But a newly announced project to develop soil maps and make them available on the Internet promises help for the situation.

VOA: special.2009.01.20

This is because diseases that infect beans can stay in the soil and infect the next bean crop.

VOA: special.2009.03.24

After the potato plants appear, organic mulch can be spread around to hold moisture, help suppress weed growth and cool the soil.

VOA: special.2009.03.10

They also will study chemical and physical properties of the soil samples with a method called infrared spectroscopy.

VOA: special.2009.01.20

"Terroir" is the word used to describe how a vineyard's soil and climate give a wine special qualities.

VOA: special.2010.10.13

The volunteers placed the plants about five centimeters into the soil to prevent rising and falling water levels from pulling them out.

VOA: special.2009.10.06

Plantings in the wetlands help hold down the soil against the forces of erosion, like wind and water.

VOA: special.2009.10.06

Radioactive particles travel in the wind and get absorbed into soil with the help of rain and snow.

VOA: special.2011.03.29

The extension service says the best formation happens when the soil is between fifteen and twenty-one degrees Celsius.

VOA: special.2009.03.10

He said the soil improvements are needed "if we are to reduce poverty and feed growing populations."

VOA: special.2009.01.20

The glacier left huge amounts of soil and rocks in what scientists call the Valley Heads Moraine.

VOA: special.2009.01.05

Soil should also be tested for its pH level, a measure of the acid and alkaline balance.

VOA: special.2009.06.09