ac·tiv·ity [ækˈtɪvəti, Am -ət̬i] RZ.
1. activity (activeness):
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Aktivität r.ż.
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business activities
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Geschäftstätigkeit r.ż.
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economic activities
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social activities
4. activity usu pl (undertakings):
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classroom activities
5. activity (radioactivity):
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Radioaktivität r.ż.