No grapes shall be on the vine, Nor figs on the fig tree, And the leaf shall fade; And the things I have given them shall pass away from them. —Jeremiah 8:5,13

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.
