Nthawi zambiri, injini yoziziritsa madzi imadutsa munjira yapadera yoziziritsira madzi, madzi otsika kutentha kulowa mumsewu wamadzi, kudzera mumayendedwe ozungulira kuti aziziziritsa mota, kenako kutentha pambuyo pa madzi kuzirala, njira yonseyo, mota. waterway ndi madzi ozizira kulowa mu ...
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