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Question:

What kind of thing do you need to do?

What kind of thing do you need to do?

Answer:

Sound barrier is used in the railway road side, absorbing the noise transmission, reducing the impact on nearby residents
Sound barrier is used in the railway road side, absorbing the noise transmission, reducing the impact on nearby residents
Sound barrier is used in the railway road side, absorbing the noise transmission, reducing the impact on nearby residents

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