Tunnel dryer in food industry, It is dug through surrounding soil, earth or rock, or laid under water, and is usually completely enclosed except for the two portals common at each end, though there may be access and ventilation openings at various points along the length. . See examples of tunnel used in a sentence. tunnels and underground excavations, horizontal underground passageway produced by excavation or occasionally by nature’s action in dissolving a soluble rock, such as limestone. The meaning of TUNNEL is a covered passageway; specifically : a horizontal passageway through or under an obstruction. A tunnel is an underground or undersea passageway. They might be utilized to move cargo and voyagers, water, and disinfection, individually. The passages are submerged paths utilized for the most part for transport purposes. How to use tunnel in a sentence. Learn about the basics behind tunnels.


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