1.Kudya zvisina kunaka uye kutungamira Kudyisa zvisina kunaka uye kutungamira kunosanganisira nzira dzekudya dzisina kunaka uye kusanganiswa kwekudya, sekunyanya kuwandisa, kushata kwemhepo, kuchekwa kwemvura, kudyisa zvisina kuenzana, nzara uye kuzara, kunwa ice ballast uye sewage, nezvimwewo, zvese zvinokonzeresa zvinokonzeresa. hwai...
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