waste-water engineering
afvalwateringenieurswese
ubunjineli ngezamanzi
bunjiniyela betemanti langcolile
ubunjiniyere bamanzi asilaphazekileko
boenjere jwa kgeleloleswe
boentšenerekelelotšhila
vhuinzhiniara ha zwa vhusefamalaṱwa
vunjhiniyara bya swa nkululo