The caves often lay on valley slopes and provided excellent views of animal migration routes.

这些洞穴通常都是位于山谷的斜坡，它是个观察动物移动路线的绝佳地方。

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Colluvial deposits at the foot of valley slopes usually affect only narrow strips of valley bottom.

河谷坡脚处的崩积体通常只影响到谷底较窄的地带。

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There is no mechanism for going downhill, for crossing the valley to the lower slopes of the high mountain on the other side.

没有下山的机制，或者穿过峡谷到达高山另一边的缓坡的机制。

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Typically this happens in the interior of large continents, in a protected river valley or on mountain slopes shrouded in mist.

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Drive just 10km east from Papallacta and you enter the Amazon Basin's cloud forest, which covers the slopes and the valley in green growth.

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In Waterville Valley, New Hampshire, the ski slopes were almost empty.

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