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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Domestic mobile telephone is steadily losing ground under offensive of ocean cell phone, exceed the valley bottom falling half to 30% from market share.

国产手机在洋手机凌厉攻势下节节败退，从市场占有率超过半数跌到30%的谷底。

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The deep troughs on the Three Gorges valley bottom are formed by river downcutting along the structurally zones on the background of regional tectonic uplift.

结果表明：（1）三峡坝区河谷深槽是在三峡地区构造抬升过程中，水流顺构造裂隙强烈侵蚀下切而形成的；

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From the bottom of the valley to the top of El Cap is about 1100 meters.

VOA: special.2009.01.07

if you've got a hill or valley and there's a cart on wheels it's going to go down to the bottom.

如果我们有一座山或者山谷，并且,有一个有轮子的车，这辆车会自动滑到底部。

麻省理工公开课 - 热力学与动力学课程节选

"Regulating is the fence at the top of the cliff, and we are the ambulances at the bottom of the valley, " says Mark Griffin of the Utah securities division.

FORBES: Magazine Article

It didn't take a Powell or a Schwarzkopf to know that as a matter of basic military strategy, it was better to be at the top of a hill than at the bottom of a valley.

CNN: Excerpt: 'The Outpost: An Untold Story of American Valor'

There are plenty of other possibilities for exploring the area, including the 12km hike between the villages of Shicheng and Changxi which is popular among Chinese hikers for its stunning autumn scenery: imagine red maples shrouded in morning mist with a village nestled at the bottom of a valley.

BBC: Rural adventures in China��s backcountry