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bubble – n. a tiny, round ball of air or gas inside a liquid; an object resembling a round ball of air or gas inside a liquid
engage in -- phrasal verb to do (something)
bizarre – adj. very unusual or strange
muffle – v. to decrease the noise made by (something)
distinguish – v. to notice or recognize a difference between people or things
specific – adj. special or particular
superhero – n. a fictional character who has amazing powers (such as the ability to fly)
