Even in dense forest, you should be able to spot gaps in the tree line due to roads, train tracks, and other paths people carve through the woods.

即便身处茂密的森林之中，你也应该能够发现人们在树林中开辟道路、铁轨和其他小路而形成的林木线缺口。

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To reproduce the landscape in 3-D, a twin-engine plane flew over the city and fired laser beams through the dense tree canopy. The beams bounced off the ground, buildings, and other structures below.

为了在3 - D模型中重现，一架双引擎飞机飞越城市和浓密的树冠，发射并采集从地面，建筑物和其他结构反射回来的激光束。

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When it creeps into forests, it forms dense carpets that can choke out native tree seedlings.

当它蔓延进入森林时，它生长形式的密集与广泛足以扼杀当地植物的生长。

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After a short flight from Kathmandu to the mountain hamlet of Lukla, it took me 12 days to reach Base Camp, trekking 160km and climbing 10, 000 feet, hiking through dense forest, over a dozen suspension bridges, above the tree line and, finally, into a frozen landscape of ancient rock and glacial ice.

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We hugged three-story-high dirt walls with vines clinging to them, passed dense bamboo forests, fragrant hibiscus bushes and groves of towering rainbow eucalyptus, a rare tree with multicolored bark.

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Next morning we start out on a trail through a slightly elevated, dense beech forest, which rises, during a hike of seven or eight hours, over the tree line and 3, 500-foot-high Mackinnon Pass, then down the other side.

FORBES: Magazine Article