Baetsi ba li-valve tsa heke mokhoa oa ho netefatsa boleng ba sehlahisoa
Joaloka moetsi oa li-valve tsa heke, re khomarela bohlokoa bo boholo ho boleng ba sehlahisoa, hobane lihlahisoa tsa boleng bo phahameng feela li ka finyella litlhoko tsa bareki, le ho fumana tšepo le tšehetso ea 'maraka. Sehloohong sena, re tla hlalosa hore na baetsi ba li-valve tsa heke ba etsa joang ...
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