Bayan zaɓin abin yanka, mutane da yawa ba sa bayyana akan saita saurin yankan, saurin juyawa da zurfin yankan.Wannan yana da haɗari sosai, zai haifar da raguwa mai yankewa, kayan narke ko ƙonewa.Akwai wata hanyar lissafi?Amsar ita ce eh!1.The yankan gudun: The yankan gudun r ...
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