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To prevent this from happening, the house's external tap should be fitted with a backflow prevention device.
防止这发生,房子的外部应该符合回流预防设备。
youdao
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To prevent this from happening, the house's external tap should be fitted with a backflow prevention device.
防止这发生,房子的外部应该符合回流预防设备。
youdao