a port and largest city in Louisiana; located in southeastern Louisiana near the mouth of the Mississippi river; jazz originated among black musicians in the late 19th century; Mardi Gras is celebrated here each year是什么意思_a port and largest city in Louisiana; located in southeastern Louisiana near the mouth of the Mississippi river; jazz originated among black musicians in the late 19th century; Mardi Gras is celebrated here each year在线翻译_英语_读音_用法_例句