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have been designing

  • present perfect progressive
    of design.
    design
    verb (used with object)
    to prepare the preliminary sketch or the plans for (a work to be executed), especially to plan the form and structure of.

Example Sentences

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Airplane and engine manufacturers have been designing more-efficient models, in part to help keep down costs of jet fuel — one of the biggest expenses airlines face.

From Seattle Times ● Jan. 30, 2023

The costumes include ostrich-feather hats, wooden clogs, bells and wax masks, elements which the Kersten family have been designing and making for five generations.

From Reuters ● Jan. 25, 2023

The shopping experience looks fairly familiar, akin to what Instacart and other delivery services have been designing for years.

From The Verge ● Aug. 29, 2022

That’s the vision of Protei, a collective of technology students from around the globe who have been designing a fleet of these craft as “open” hardware—or electronic gadgets assembled from scratch using shared, collective information.

From Scientific American ● Sep. 16, 2011

Two of the leading young 'post- impressionist' painters in Paris, whose names are just beginning to be known in England, have been designing posters for this store for years.

From Letters from America by Rupert Brooke