单词：big_sioux_river 

名词

• 
  [1.n.big_sioux_river] (同义词:[Big_Sioux_River]  )
• 
  注释列句：a river that rises in northeastern South Dakota and flows southward to join the Missouri River at Sioux City, Iowa
• 实 例 -> [river( n. 河, 江 )] 
  部分总称 -> [South_Dakota(n. 南达科塔（美国） )] 
  所有总称 -> [South_Dakota(n. 南达科塔（美国） )]