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Use "add-ons" in a sentence
"David Goldston, government affairs director for environmental advocacy group Natural Resources Defense Council, called the add-ons "an inventory of all the worst ideas they've had for the last two decades.""
"Try out one of the best alternative file managers, or power up Windows Explorer with free add-ons."
"One of the downfalls to Prism was the inability to use add-ons or extensions."