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Building a subsea tunnel may not be that simple. After all, there is seawater everywhere in the sea, and seawater also has a certain water pressure. How is it possible to construct a tunnel under the sea while being able to operate successfully? In fact, after many engineers have tried various methods, they have cleverly replaced this special problem in the seabed with the problem we encountered underground. The sea is surrounded by water. How was the undersea tunnel built? After reading, admire the wisdom of the engineers! /Infrastructure Crazy Space-Time Astronaut, science worker, The world's great wonders, To share interesting popular science knowledge for you, Science takes you to understand the world. Increase knowledge together! 🔔 Welcome to subscribe / @时空宇航号