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Akazi ko kwizerwa, gukora neza

Yubatswe mu byuma byujuje ubuziranenge, iyi ntoki yakozwe kugirango ihangane n’ibihe bibi kandi ireme igihe kirekire.Imiterere yukuboko kwa tunnel ni siyanse kandi ishyize mu gaciro, kandi irashobora gukora neza ndetse no mumwanya muto wa tunnel, hamwe na manuuverability ntagereranywa.