Add wind passing over rolling terrain and "you get the same wavy effect as on the surface of water."

加上丘陵地区起伏的风向，就产生与水面泛起的波纹相同的效应。

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UAMS works over a range of operational environments, from large rolling terrain to smaller urban airspaces.

UAMS能够工作在多种作战环境中，包括较大的起伏地形以及很小的城市作战空间。

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The platoon had flanked the Soviet advance and used the covered, rolling terrain to maximum advantage to halt the Soviet attack and destroy over 24 tanks during the engagement.

这个排在苏联人进攻方向的侧翼，利用隐蔽物和起伏的地形，最大程度地发挥了自己得优势，击退了苏联人的进攻，在战斗中击毁24辆坦克。

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Ross, a Scot considered the dean of American golf architects, was given an unlimited budget for the Overhills course and 3, 500 acres of ideal rolling, sand-based terrain from which to select the 200 or so acres he would need.

WSJ: The Afterlife of Fort Bragg's Golf Course | Golf Journal by John Paul Newport

In addition to independent movement, the wheels can also be locked into "wheel walking mode, " where treacherous terrain can be traversed by crawling instead of rolling over it.

ENGADGET: ESA's six-wheeled Mars bot prototypes ready to kick some martian ass