Ho sebelisa lihlopha tsa "resistance tube" bakeng sa boikoetliso ba 'mele o felletseng ho fana ka melemo e mengata, ho kenyelletsa bonolo, ho feto-fetoha ha maemo, le katleho.Sehloohong sena, re tla hlahloba melemo ea li-tube tsa ho hanyetsa, lisebelisoa tsa tsona, boholo ba tsona, mokhoa oa ho khetha e nepahetseng, le mokhoa oa ho ...
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