| 摘要 |
The covering is mainly tunnel-shaped, is light-permeable and sound-absorbent, and the tunnels are constructed mainly from recycled materials. The tunnels have solar collectors and integral filter systems for exhaust fumes. They may be coupled to energy-generating biological waste recycling plants, to generate electricity, heat, and fertilizer. The tunnels may be covered by bridges for cyclists, pedestrians, and for animals.
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