求有关牙买加博尔特的质料（英文版）

Usain Bolt (born 21 August 1986) is a Jamaican sprinter and reigning Olympic champion over 100 m. He is the current world record holder in the 100 m (9.69 s), world junior record holder in the 200 metres (19.93 s), and Jamaican record holder in the 200 m (19.67 s). His name and achievements in sprinting have earned him the media nickname "Lightning Bolt".
Bolt was born in Trelawny, Jamaica and educated at the William Knibb Memorial High School. At the age of 15 he won a gold and two silver medals at the 2002 World Junior Championships in front of a home crowd in Kingston, becoming the youngest world junior gold medalist ever. He won another gold medal at the 2003 World Youth Championships, running the 200 m in 20.40 seconds. Usain Bolt and retired Jamaican sprinter Michael Green are the past students of William Knibb.

In 2004 Bolt ran the 200 m in 19.93 seconds, becoming the first junior to break the 20-second mark; breaking Lorenzo Daniel's world jun