"Upon the earth distress of nations with perplexity; the sea and the waves roaring; men’s hearts failing them for fear, and for looking after those things that are coming on the earth."—#Lu 21:25,26.

Dalili da aka ba aka ba da sassan yankunan da suka dace wanda masu sayarwa za su iya amfani da su don gudanar da bincike da gwada gwagwarmayar fasahar su da kuma inganta sakon su don sake tabbatar da masu amfani.
