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Use "insertions" in a sentence
"The cost of a display advertisement in the local newspaper varies according to the size of the ad, measured in column inches, and the number of times the ad is printed per year, known as insertions per year."
"Prussians believed that Prussia was the original Garden of Eden, and amber "insertions" (these creatures from a lost world) provided"
"Hidden advertising like ADB’s “exposure” articles and paid label insertions being showcased as editorial don’t pass the sniff test."