<prompt> Translate the following text to SwahiliWhen both broad generalizations and in-depth understanding are required, designs that cumulate case studies over a wide number of sites and settings, or that combine case study methods and other methods in one concurrent effort may meet this dual need U.S.  <response>: Wakati wote generalizations pana na uelewa kina zinahitajika, miundo kwamba kumesababisha masomo ya kesi juu ya idadi kubwa ya maeneo na mazingira, au kwamba kuchanganya njia ya utafiti wa kesi na mbinu nyingine katika juhudi moja wakati huo huo inaweza kukidhi mahitaji haya mbili. 