The speaker checks the microphone in the stadium, crowd noise:
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Falling rapiers, Fencing
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Tennis Ball Machine
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Curling, stone hits stone
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Bowling Ball Return Machine
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Conversations, Exclamations, applause of
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Ping pong bouncing ball
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Basketball in the gym, throwing the ball,
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400 meters running, cheering fans
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Baseball kick the ball
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Referee, Baseball, crowd noise, ball throw
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The bike moves, stops
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Air hockey game
★★★★★