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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China has already made rapid advances in military jet aircraft and its H-6 large twin-engine bomber, modelled on the Russian Tu-104, can be converted quite easily into a commercial aircraft.

中国已经在军用飞机领域迅速取得进展，以俄罗斯图-104为模型制造的H-6大型双引擎轰炸机，可以很轻松地就改装成商用飞机。

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Closer up, from a twin-engine aircraft, those wrinkles become thousands of conifers marching over the steep and broken ground.

双引擎飞机低空掠过，这些皱纹变成了遍布于陡峭不平的山地上的松柏。

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Soon after takeoff, he let me have the controls a different experience than flying a twin engine Cessna!

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