英语翻译

英语翻译
No one knows who invented the pencils or when it happened.A Swiss described a pencil in a book in 1565.He said it was a piece of wood with lead inside it.(Lead is a very heavy,soft,drak gray metal.)Pencils weren't popular,and people continued to write with pens.They used bird feathers as pens.
Then,in 1795,someone started making pencils from graphite,and they became very popular.Graphite is like coal.(Coal is black,and we burn it for heat and energy.) Today,people make pencils in the same way.They grind the graphite,make it into the shape of wood.One pencil can write 50,000 English words or make a line 55 kilometers long.
people wrote with feather pens and then used pens with metal points.They had to dip the point into ink
after every few letters.Next,someone invented a fountain pen that could hold ink inside it.A fountain pen can
write several pages before you have to fill it again.
Two Hungarian brothers,Ladislao and George Biro,invented the ballpoint pen.They left Hungary and started making ballpoint pens in England in 1943,during World War II.English pilots liked the pens.they couldn’t write with fountain pens in airplanes because the ink leaked out.Later,a French company called Bic bought the Biros' company.Some people call the ballpoint pens "Bics."Australians call them "biros."Whatever we call them,we use them every day.
不要机翻，要人翻，