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
When the roots show through the holes in the bottom of the pot, transplant each seedling into a twelve centimeter pot.
VOA: special.2009.04.21
In two thousand nine, a team of scientists spent two months researching blue holes on Bahamian islands including Andros and Abaco.
VOA: special.2010.11.10
Information gathered from these blue holes is helping scientists to increase their understanding of biology, archaeology and geology.
VOA: special.2010.11.10
The fluoride mixes with enamel, the hard surface on teeth, to help prevent holes, or cavities,from forming.
VOA: special.2009.03.11
Deep brain stimulation begins by doctors drilling two small holes in the head of the patient.
VOA: special.2009.02.03
Scientists talk about many kinds of subjects -- from black holes to biological clocks to botany.
VOA: special.2010.05.14
She explains that you can make a compost pile or dig a pit or use a waste container with holes cut in the side.
VOA: special.2009.06.23
The carbon dioxide enters the plants through tiny holes or pores on the surface of leaves.
VOA: special.2010.01.26
The process calls for the chemical to be pushed through the small holes of a spinneret.
VOA: special.2011.03.01
The container should have holes in the bottom so the extra water can flow out.
VOA: special.2009.04.28
Kenny Broad and his team spent time talking with native Bahamians to ask them if they knew where the team could find other blue holes.
VOA: special.2010.11.10
Another show at the Smithsonian's planetarium is called "Black Holes: The Other Side of Infinity."
VOA: special.2010.09.29
Experts at the Denver Museum of Nature and Science made the "Black Holes" movie.
VOA: special.2010.09.29
The pot should have holes in the bottom so water can run out.
VOA: special.2009.04.21
The shelves are pieces of metal with many small holes through them.
VOA: special.2009.11.30
These holes let water slowly pass through the walls of the filter.
VOA: special.2009.06.22
He probably suspected it had solid particles that would block the holes.
VOA: special.2010.02.09
But states have had to find other ways to fill budget holes.
VOA: special.2009.07.31
He said it could drill holes faster than twelve men working together.
VOA: special.2009.02.21
The guns tore open big holes in the Confederate battle line.
VOA: special.2009.11.05
Burning away the material added to the clay leaves tiny holes.
VOA: special.2009.06.22
These laborers had the job of cutting holes in rock.
VOA: special.2009.02.21
应用推荐