Li-valve tsa Butterfly: Khetho e Phethahetseng Bakeng sa Taolo e Molemo ea Phallo Ha ho tluoa tabeng ea ho laola phallo liindastering tse sa tšoaneng, bohlokoa ba li-valve tsa serurubele bo ke ke ba hanyetsoa.Li-valve tsena tse feto-fetohang li sebelisoa lits'ebetsong tse fapaneng tse fapaneng ho tloha ho oli le khase, kalafo ea metsi, ho hlahisa matla ...
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