最終更新日：2024/07/29
The insulation in the walls creates a dead-air space that helps to keep the room warm.
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The insulation in the walls creates a dead-air space that helps to keep the room warm.
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The insulation in the walls creates a dead-air space that helps to keep the room warm.
The insulation in the walls creates a dead-air space that helps to keep the room warm.
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