In nature, they often nest on mountaintops and on the sides of cliffs .

在自然界中，它们经常在山顶和悬崖边筑巢。

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One of the most famous places is the Red Flag Canal in Linzhou which was built on the side of cliffs of the Taihang Mountains.

最有名的地点之一是河南林州的红旗渠，它建在太行山的悬崖边上。

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Pounding waves slowly chip away the bases of cliffs, forcing chunks of rock to crumble and slide into the sea.

海浪的冲击慢慢蚕食了悬崖的基础，促使岩石块倒塌而滑入大海。

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The walls and cliffs of Bryce Canyon once were completely covered with water.

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Outside a crisp winter sun reflects on Plymouth Sound, a stunning amphitheatre of cliffs overlooking the sea.

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One day, Manny and I hiked along the edge of the Firth, treading along the edges of cliffs that plunged precipitously into the vibrant green river.

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It's a mysterious landscape of cliffs and valleys sculpted over millions of years by advancing and retreating seas and the jostling of tectonic plates.

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