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home.howstuffworks.comA septic tank is simply a big concrete or steel tank that is buried in the yard. The tank might hold 1,000 gallons (4,000 liters) of water. Wastewater flows into the ...瀏覽：713
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日期：2024-08-19
A septic tank is simply a big concrete or steel tank that is buried in the yard. The
tank might hold 1,000 gallons (4,000 liters) of water. Wastewater flows into the ......
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