Umfanekiso oqingqiweyo wentsimbi, umfanekiso oqingqiweyo wentsimbi.Yenziwe ngezinto zentsimbi luhlobo lokukrola, izinto zensimbi ezingenasici zineempawu zokuchasana nomoya, umphunga, amanzi kunye nezinye izinto ezibuthathaka ezidliwayo kunye ne-asidi, ialkali, ityuwa kunye nezinye iikhemikhali zokuhlwa okuphakathi ...
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