This crescent-shaped ridge of sand dune in Oman was formed by strong trade winds that form a smooth hill facing the wind (left) and concave slipface on the back.

阿曼一座新月形的沙丘脊由强信风吹成，在迎风的方向（图左侧）形成一面平缓的凸破，在背风面形成凹坡。

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On the hot afternoon of July 7, just as Gonzales was creeping up the hill outside Fillmore, the worst happened: Wind gusts of 48 MPH moved in, sweeping the fire across the freeway.

7月7号的这个炎热的下午，正好当Gonzales爬上菲尔墨外的山脉时，最可怕的事情发生了：风以48英里每小时的速度袭入，将火卷到公路上。

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Besides, through test of sensitivity, the critical values of height of hill, intensity of inversion and horizontal wind speed, which have important influence on transfer of wind are obtained.

通过敏感性试验，发现了对气流输送有重要影响的逆温强度和山体高度及水平风速的关键值。

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Less than two years later, a fleet of three 1.5 megawatt (MW) wind turbines started turning on a hill located near the center of the island.

FORBES: Wind Power's Worst Enemy: Noise

"We continue to tell everyone on Capitol Hill you need long-term policies to get long-term growth in the wind industry, " Kelley said.

NPR: US Economy Hamstrung By Washington's Brinksmanship

Change takes work and creativity, much like how a roller coaster needs to climb up that first steep hill, but the reward is the thrill of the speed and the wind in your face on the way down.

WHITEHOUSE: Champions of Change Blog