Ugereranije n’imishinga rusange yubwubatsi, imishinga minini yubwubatsi bwa metallurgiki ifite ibiranga ibintu bigoye gutembera, ibintu byinshi, ishoramari rinini, igihe cyubwubatsi bukomeye, umubare munini wubushakashatsi hamwe nubuhanga buhanitse bwo kubaka ...
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