@elenastahov @AbundantLandUse @FreitasABR Also, plumbing, if missing p-traps or a drain isn't used regularly and the p-trap dries out.
@elenastahov@AbundantLandUse@FreitasABR还有管道，如果缺少p-疏水阀或排水管没有定期使用，p-疏水阀会变干。
@elenastahov @AbundantLandUse @FreitasABR Also, plumbing, if missing p-traps or a drain isn't used regularly and the p-trap dries out.
@elenastahov@AbundantLandUse@FreitasABR还有管道，如果缺少p-疏水阀或排水管没有定期使用，p-疏水阀会变干。