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voluntary
स्वैच्छिक / अपनी इच्छा से
Done or given by your own free choice, without being forced or paid for it.

“The cleanup drive at the local park is entirely voluntary, but many residents have signed up to help.”
स्थानीय पार्क में सफाई अभियान पूरी तरह से स्वैच्छिक है, लेकिन कई निवासियों ने मदद के लिए अपना नाम दिया है।
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