倘若你尚未踏上过西藏的大地，自然会纳闷：在这方号称“世界第三极”的近天高原，为什么会首先想到水?又会有多少使人梦绕魂牵的水?也许，从世界海拔最高的雪域高原联想到水，你可能首先会联想到珠穆朗玛峰的冰川、雅鲁藏布江的湍流、充满神奇传说的圣湖。
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