In spring, weak upwelling exists in the river mouth, whereas in summer downwelling occurs in steep area north and south of the mouth.

春季在长江口近岸存在弱上升流，夏季长江口外的陡坡区出现下降流，而长江口以北和以南的陡坡区出现上升流。

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My husband and I were walking around the area in the morning and we saw a very steep hill.

我和丈夫早上在附近转悠时，我们发现了一个很陡的山坡。

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The first part of our climb was only moderately steep, leading through an "Alm" area with some huts.

我们攀登的第一部分路线，仅仅为普通陡峭程度，且途经一片高山草原区。草原区上有不少的木屋。

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Above the park, perched on a steep ridge, is an area about ten blocks square, packed solid with hotels, casinos, souvenir shops, observation towers and franchise restaurants.

NPR: Excerpt: 'Inventing Niagara'

Golitha Falls, a nature reserve on the edge of the moor, is "an area of woodland occupying a steep-sided valley gorge, with the River Fowey flowing through it in a series of spectacular cascades", according to Natural England.

BBC: Warning after Cornwall canoe river death

That set off a frenetic search through an area marked by dense brush and steep terrain.

CNN: See daring rescue of hiker