Automobiles create it. Any device that burns fuels like coal,gasoline,kerosene, oil or wood will produce carbon monoxide.
VOA: special.2010.02.02
The shield itself, as I've told you is made of a heavy wood, covered by a leather or bronze sheet about three feet across, something in the neighborhood of 16 to 20 pounds worth of shield and gripped as I told you before.
而盾牌,就像我说过的,是由沉重的木材制成,上面包裹有皮革或铜皮,约三英尺宽,大概是十六到二十磅重,就像我刚才所说的,拿起来很费劲
Any device that burns fuels such as coal,oil or wood can create the gas.
VOA: special.2010.02.02
A farmer could save on wood or stone with a round design that needed less material than traditional barns.
VOA: special.2009.12.29
The treadle pump is easy to build from bamboo or other wood and two metal cylinders with pistons.
VOA: special.2009.08.17
Visitors using canoes or airboats are likely to see large groups of wading birds like the wood stork or great blue heron.
VOA: special.2009.06.30
Other controls include turning over the soil, pulling the weeds or covering them with mulch made of wood, garden waste or other material.
VOA: special.2010.08.10
They were conservative men. They represented workers with certain skills, such as wood workers or metal workers.
VOA: special.2011.03.31
"And half of the people on planet Earth every day use wood or biomass for cooking.
VOA: special.2010.02.01
Rock walls made of wood or concrete have places for the climber's hands and feet.
VOA: special.2009.12.09
Other controls include turning over the soil, pulling the weeds by hand or covering them with mulch made from wood, garden waste or other material.
VOA: special.2009.05.26
Some word experts say the expression to frame someone comes from the way wood must be fitted closely around a painting or photograph to frame it.
VOA: special.2010.02.21
This process produced paper from cloth, straw, wood or the bark of trees.
VOA: special.2009.01.26
This process produced paper from cloth, straw,wood or the bark of trees.
VOA: special.2009.07.06
They use biomass fuels like wood,crop waste, animal waste or coal.
VOA: special.2010.02.01
For example, the New York State Department of Environmental Conservation lists some dos and don'ts of composting on its Web site: Do add lime, small amounts of wood ashes or crushed eggshells to the compost pile.
VOA: special.2009.06.23
It also creates a huge disincentive for those who want to export or trade in illegal wood products.
VOA: standard.2010.05.28
People who aren't connected to the electric grid often get their light from candles or burning wood.
VOA: standard.2009.12.13
"Traditional environmental risks are those that face largely the poor in China, risks like drinking water contaminated with infectious organisms or highly polluted indoor air from people burning wood or other dirty fuels inside homes without chimneys."
VOA: standard.2010.04.07
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