fence line

基本解释

Guards walk the fence line being led by several German Shepherds.
几只德国牧羊犬（狼狗）在前，警卫们在后，从防护网前经过。
By late June she was making 200 yards daily, still along the fence line, amid a hospitable jumble of rocks, weeds, and rodent burrows.
6月末，她每天滑动200码（约183米），仍然沿着这条警戒线，在混杂着岩石、野草和鼠洞的友好环境中游动。
xianguo.com
You don't want the viewer's eyes to wander aimlessly around the frame, so use whatever might be available to lead him into the image—a winding road, a stream, or a fence line, for example.
你总不希望观众在欣赏你的作品时眼睛只是在照片上漫无目的地游荡吧，所以你要利用任何可能吸引他注意力的物体——比如一个曲折的道路，一条小溪，或一条篱笆。

The road curved along the back side of the Johnson Space Center, an expanse of empty ground bordered by leafless winter trees, where deer patrolled the fence line and joggers wended in and out of sight, following the exercise trail through a thin screen of forest.
NPR: In 'Challenger Park,' Mom Is an Astronaut
Following the cigarette-butt controversy, the Paulsens had installed a high fence and planted a line of ornamental spruces that had since grown up enough to screen them from the spectacle.
NEWYORKER: Good Neighbors
That person leaves the fence or never crosses the invisible line and offers are suppressed.
FORBES: Why Big Data Should Be A Boon For Mobile Marketers