● Kukoka bwino ndi khalidwe lofunika kwambiri. Ena a iwo otsika-anzanu mapampu ndi otsika kukhetsa, pamene ena amatha kutulutsa otaya mitengo apamwamba, malinga diaphragm ogwira ntchito m'mimba mwake ndi sitiroko kutalika. Iwo akhoza kugwira ntchito ndi mkulu kwambiri ...
Werengani zambiri