Zogulitsa za mavavu padziko lonse lapansi zikuchepa, kupititsa patsogolo mpikisano ndikofunikira kwambiri
Mavavu azinthu padziko lonse lapansi amafuna kuchepa, kuwongolera mpikisano ndi chinthu chofunikira kwambiri Vavu ndi gawo lofunikira la zida zonse zazikulu, zomwe zimagwiritsidwa ntchito kwambiri popanga mapaipi (zinthu, madzi, nthunzi, mpweya ndi mafuta, etc.) odulidwa, kuponderezana, kuwongolera ...
Onani zambiri