File:This process involves cloud seeding – when various substances are put into clouds in an attempt to cause rain.ogg
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This_process_involves_cloud_seeding_–_when_various_substances_are_put_into_clouds_in_an_attempt_to_cause_rain.ogg (Ogg Vorbis声音文件,长度11秒,97 kbps,文件大小:128 KB)