Underground construction is crucial to success of Olympic Games venues

摘要

When the 2008 Olympic Games begin in Beijing, China is September it will not only mark the end of the journey for the Olympic torch and the thou-sands of participating athletes, but the games will also mark the culmination of a massive amount of construction in the city.On display for the world to see will be 31 new and refurbished venues including the 91,000-seat National Stadium called the "Bird's Nest" and the aquatics center, called the Water Cube.