Boulder depends on runoff from mountain snow, but the snow-pack at lower elevations has evaporated.
Boulder depends on runoff from mountain snow, but the snow-pack at lower elevations has evaporated.
波尔德市的用水来自山上积雪融化所产生的迳流，但是低海拔山坡却不再有积雪。
Boulder depends on runoff from mountain snow, but the snow-pack at lower elevations has evaporated.
波尔德市的用水来自山上积雪融化所产生的迳流，但是低海拔山坡却不再有积雪。