[音频]a group of things of the same kind or related in some way, coming one after another or in order
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[音频]a person who takes part in an activity or event
[音频]change (sth.) esp. slightly in order to improve it or make it more suitable or effective
[音频]a picture on the screen of a television, cinema or computer
[音频]recognize and correctly name (sb. or sth.)