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Practice Listening: Highlight Incorrect Words
ID: #4606
Short
Buildings
* Click on the words that are different from what you hear
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Correct Transcript:
Today we are going to examine one of the techniques that engineers in Japan have designed to protect buildings in the event of an earthquake. It's called base isolation and it involves temporarily separating the upper part of the structure from its foundations. The system works by levitating the building on a cushion of air. Sensors detect seismic movements in the ground and activate an air compressor. This pumps air in between the structure and the foundations, lifting the building three centimetres above the ground. When the earthquake subsides, the compressor is turned off and the building returns to its original position.
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