turbid       
adjective  formal uk/ˈtɜː.bɪd/ us/ˈtɝː.bɪd/
 (液体)浑浊的,污浊的
(of a liquid) not transparent because a lot of small pieces of matter are held in it
  Several different species of fish inhabit these turbid shallow waters. 有几种鱼生活在这些浑浊的浅水域中。 
 Synonyms: cloudymuddy murky