The document is a collection of examples sentences using common English phrasal verbs related to change and technology. It provides definitions and sample sentences for phrasal verbs such as "back up", "change around", "change into", "change out", "do away with", "do up", "fade away", "key in", "make into", "test out", "turn into", "use up", and "wear out". Each entry includes the phrasal verb definition and one or more example sentences to illustrate its meaning.