Task: Translation
Input (Xhosa): Ukulawulwa kwendawo esivulekaye (ukuquka iventielyshini ne ziphozisi) zifumaneka ngekusebenzisei iimeko ezingengeni-manzi okanye ezingangeni gesi.
Output (English): The control of openings (including ventilation openings and fans) is achieved by using watertight and gastight conditions.