Duba zuwa sashi na ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda sashi: Passage: Rushewar zirga-zirgar kai tsaye, watau, sauyin yanayi na F → S na kai tsaye, na iya faruwa a cikin kewayon yawan kwararar ruwa a cikin kwararar kyauta. Kerner ya bayyana, bisa ga bayanan da aka samu, cewa saboda yiwuwar lalacewar zirga-zirgar kai tsaye ko haifar da lalacewar zirga-zirga a daidai wannan hanyar babbar hanya a kowane lokaci akwai kewayon karfin manyan hanyoyi a cikin matsala. Wannan kewayon karfin manyan hanyoyin yana tsakanin mafi ƙarancin ƙarfin Tambaya: Yaushe lalacewar zirga-zirga za ta iya faruwa?
babbar hanyar kwalliya a kowane lokaci