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Use "expandable" in a sentence
"The Rage 2 blade expandable is the answer to all broadheads!"
"He has been developing so-called expandable space habitats, a technology he bought from NASA a number of years ago."
"Sony appear to have played it safe, but I actually think they either don't like the idea of expandable ISO, they don't know how to do it (unlikely) or they're not allowed to use it"