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柯达阿布奎达(Kodak
Albuquerque)的国际气球节
地方性遗产
照片中的这些彩色气球是不是构成了一幅美丽的景色呀？
每年十月的柯达阿布奎达国际气球节，天空都会飞过几百个热气球，而前来观看这场盛事的人则超过一百万人。
气球能在天空飞是因为热空气会向上升。想要让热气球升空，驾驶员首先要确定篮子有牢牢的绑在地上，这样气球才不会忽然升空。然后再将气球 (或称气囊) 织布平铺在地面上，并利用风扇将空气吹入气球内以便撑开织布。当气球充好气后，驾驶员会使用丙烷(气体的一种)燃烧器将热气灌入气囊，当热空气渐渐增加，气球会慢慢的上升，到最后会完全竖立起来。当驾驶员发出信号，别人会解开绑住篮子的绳子，则气球就升空了。驾驶员会透过丙烷燃烧器来控制气球飞的高度，想要飞高时，他或她就会打开燃烧器加热气囊内的空气，若想要降低高度时，驾驶员只要让空气冷却下来即可。
Aren't those colorful balloons in the photo a beautiful sight?
Every October, several hundred hot-air balloons fly through the air in the Kodak Albuquerque International Balloon Fiesta. More than a million people come to watch the event.
A balloon can fly in the air because hot air rises. To launch a hot-air balloon, the pilot first makes sure the basket is tied securely to the ground, so it doesn't suddenly fly off. Then the fabric of the balloon, or the envelope, is spread on the ground. A fan blows air into the envelope to help open it. As it opens, the pilot uses a propane (a kind of gas) burner to blow hot air into the envelope. The balloon then rises as it is inflated with the hot air until it is upright. When the pilot gives a signal, the basket is untied, and there is lift-off. The pilot uses the propane burner to control how high or low the balloon flies. To go up, he or she turns up the burner to make the air in the envelope hotter. To go down, the pilot just lets the air cool down.
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