驴行天下　背包野游篇

　　What is backpacking?何为背包游
　　A backpacker packs all of his or her gear into a backpack and hikesto an inspirational location. This gear must include food, water, andshelter, or the means to obtain them, but very little else, and often ina more compact and simpler form than one would use for stationarycamping. Many backpacking trips last just a weekend (one or twonights), but long-distance expeditions may last weeks or months,sometimes aided by planned food and supply drops.