A sweltering(使人热得发晕的), windowless room in an old district of Dubai, no more than 5 metres by 3 metres in size, is the only home to a six?year?old boy from the Philippines. His name is Jerry and he sh
In 1826,a Frenchman named Niepce needed pictures for his business.But he was not a good artist.So he invented a very simple camera(照相机).He put it in a window o