Despite the risk from old-fashioned ground fire, particularly in narrow valleys, a ride in a chopper is still better than land travel on ambush-ridden or non-existent roads.

尽管存在着来自传统地面火力的威胁（尤其是在狭窄的峡谷里），乘坐直升机依然要比在暗藏伏击或者根本不存在的道路上行进更好。

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Or perhaps in some of the more distant mountain peaks, where the snows receded, crowning the peaks while leaving vast valleys free at last for the cattle that had survived the winter to graze upon.

又或许在一些更远的山峰上，那里，冰雪正在消融，只有稍许尚在山顶上，最终把那些巨大的山谷留给了已经活过严冬的牛儿们在那里吃草。

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Due to the foehn effect and topographical enclosure, the valleys in the mountainous areas of southwestern China have a special dry and hot climate, and host savanna or semi-savanna vegetations.

由于焚风效应和封闭地形，我国西南地区的一些河谷地段形成了独特的干热河谷气候，其植被为萨王纳或半萨王纳植被。

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This was a challenge since seventy percent of the inland waterway system is in rural areas, in low-lying valleys like Pittsburgh, or in low-income neighborhoods not well served by the Internet.

WHITEHOUSE: A Rising Tide Lifts All Ships

All those kids in inner cities and small farm towns, in these Ohio valleys, or the rolling hills of Virginia, somewhere in Jersey, somewhere in Brooklyn, maybe even a kid in Hawaii -- kids dreaming of becoming scientists or doctors, engineers or entrepreneurs, diplomats or musicians, maybe even a President, they need a champion in Washington.

WHITEHOUSE: The White House

When states rely upon highly volatile sources of revenue, such as personal or corporate income, these peaks and valleys tend to worsen in tough economic times and often lead to long-term, detrimental cuts in in spending on education and other critical government services.

FORBES: Strangled By Taxes, Will Michigan Loosen The State's Grip?