Umutwaro, nanone witwa indobo, umutwaro w'imbere, cyangwa umutwaro, ni imashini ikoreshwa cyane murwego rwubwubatsi, haba mu nyubako, imirimo rusange, imihanda, umuhanda munini, tunel, cyangwa igikorwa icyo ari cyo cyose gisaba kwimuka ubutaka cyangwa amabuye mubwinshi. , kimwe no gupakira a ...
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