Baki ea banna ea ultra-sonic down

Lintlha tsa sehlahisoa:
Lula u futhumetse ntle le ho chesa ka har'a baki ena. Theknoloji ea eona ea ho kenya letsoho e laola mocheso oa ka hare ka ho potoloha moea ka baki ha u ntse u tsamaea, le ho koala mocheso ka har'a li-cubes tse ka hare ho u boloka u futhumetse ha u emisa. E bolelang? Seroki sena se phefumolohang se etsa hore u lule u pholile ha lebelo la hao le ntse le eketseha, ebang u tseleng kapa u le teropong. Ha u phomola kapa u qeta letsatsi, e u boloka u futhumetse. Eketsa khetla, 'me u se u itokiselitse letsatsi le tletseng la li-resort laps.