Every four years, the world’s best athletes come together for one of the most exciting competitions in sport: the Olympic Games. After years of training, competitors in more than forty different sports win and lose their events, and set new world records, in front of crowds of people.
The Olympic Games are more than two thousand five hundred years old. So how did they start, how have they changed over the years, and what have been some of the most important times in their history?
每四年，世界各地傑出的運動員會一起參加體育界最刺激的賽事之一：奧林匹克運動會，經過多年的訓練，40多種運動種類的競爭者將一決勝負，並在眾人面前立下新的世界紀錄。
奧林匹克運動會有超過兩千五百年的歷史，它是怎麼開始的？這些年來是如何改變的？他們歷史上最重要的時刻是？