有关奥运的历史(英文)

The games were held every four years during August and September and the word "Olympiad", which referred to the four year intervals between competitions, was commonly used to measure time. The first documented Olympic champion was a man named Coroebus, a cook from Elis who won the sprint race in 776 BC. Historians believe that the games had already existed for at least 500 years prior to that date. The Olympic Games originally featured only one event: a race called the "stade", equal to a distance of about 210 yards. By 728 BC two additional races had been added, comparable to the 400 meter and 1,500 meter races of the modern games. The Olympics came to include wrestling, boxing and the pentathlon, as well as specialized events for soldiers and heralds. It was only in 472 BC that the events were spread out over a period of four to five days, previously they had all taken place on a single day.
Participation in the Olympic Games was originally limited to fre