As he walked over the battlefield, he saw where rains had washed away the earth covering many of the fallen soldiers.
VOA: special.2009.11.12
The short wave signals bounce off the ionosphere that surrounds the Earth,back to the ground and then back to the ionosphere.
VOA: special.2010.12.08
The three men had found one of the largest amounts of gold ever discovered lying on the surface of the Earth.
VOA: special.2009.02.04
The debris now circles the Earth in orbits from two hundred kilometers to over three thousand eight hundred kilometers.
VOA: special.2009.04.01
It has high mountains. It has valleys formed by ancient ice that cut deep into the Earth millions of years ago.
VOA: special.2009.01.07
The agreement sets targets to prevent the Earth's average temperature from rising more than two degrees Celsius above pre-industrial levels.
VOA: special.2009.12.26
The family hopes the music will attract attention to the need for taking good care of the earth and its seas.
VOA: special.2009.06.16
Professor Taylor says his team used this method to discover that butterflies depend on information about the Earth's magnetic fields.
VOA: special.2010.04.27
One argument against the comet theory is that a comet would have left a large hole in the Earth's surface.
VOA: special.2009.01.20
Newton proved his idea by measuring how much gravity force would be needed to keep the moon orbiting the Earth.
VOA: special.2011.06.01
Or they may bury them in the earth, place them in a tomb or scatter them in a special place.
VOA: special.2009.12.11
Astronomers use the observatory to study the positions and movements of the Earth, sun,moon and other objects in space.
VOA: special.2009.09.21
Borman and Lovell continued to circle the Earth, day after day, as workers hurried to meet the new launch date.
VOA: special.2009.07.01
Not until the nineteen fifties did scientists, using radioactive dating, place the age of the Earth at over four billion years.
VOA: special.2009.12.01
应用推荐