Hot air balloons rise from salt flats of Uyuni, October 28, 2004, in the early morning light during the mass lift-off of some twenty hot air balloons as part of a International fiesta to support tourism in this region. The Bolivian salt flats of Uyuni are located some 600 Kilometers south of La Paz with a surface of about 10,500 square kilometers and 3,650 meters above sea level in Potosi, near the Bolivian southwest border with Chile. REUTERS/David Mercado
词汇：
balloon n.气球
mass adj.大规模的, 集中的
lift-off n.离地升空
fiesta n.<西>节日(特指在西班牙和拉丁美洲以游行和舞蹈来庆祝的节日)
Bolivian adj.玻利维亚的
La Paz 拉巴斯(玻利维亚西部城市,政府所在地)
Chile n.智利（南美洲西南部的一个国家, 首都是圣地亚哥Santiago）