请帮忙把中文翻成英文,不要机器翻哦

The 2008 Beijing Olympic Games was just held successfully in China .
Chinese athletes did better again,They got 51 gold ,21 silver and 28 bronze medals for all.
Liuxiang did not join the game because of his injuring,This made all of us feel sad.
Zhang Juanjuan defeated the South Korea which has been unbeaten by 24 years ,and won the gold medals.