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）