Pockets of thick fog get trapped along the ridgelines, magpies nest among the outcrops, and springs intermittently spray over the rocks.

厚重的浓雾弥漫于山脊线，露头的岩层上还垒着喜鹊窝，间歇的山泉水喷洒在岩石之上。

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Smoke rises as a firefighting helicopter alights after taking on water to spray over a wildfire on September 7, 2010 in Boulder, Colorado.

2010年9月8号，科罗拉多州博得附近当消防队员用直升机取水去灭火时，浓烟升起。

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Residents watch as a firefighting helicopter alights after taking on water to spray over a wildfire on September 7, 2010 in Boulder, Colorado.

2010年9月8号，科罗拉多州博得附近当地居民观看救火直升机取水灭火。

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Many farmers favor the technology because it allows them to spray herbicide directly over crops to kill weeds and certain biotech crops more easily fight off damaging pests.

MSN: Food safety group calls for court to limit GMO seed patents

The potential uses are mind-boggling: in one notorious example, viewers of a football match in Greece saw giant spray-cans of deodorant hovering over the pitch.

ECONOMIST: Virtual advertising