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1. Oxford Dictionary

   non-point source

   • n.
     a source of pollution that issues from widely distributed or pervasive environmental elements

   • noun: non-point source, plural noun: non-point sources

2. • 釋義

   n.

   名詞

   • 1. a source of pollution that issues from widely distributed or pervasive environmental elements cattle are the leading non-point source of pollution in Canada today