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Array ( [1] => Array ( [id] => 1 [name] => 世界 [pid] => 0 [2] => Array ( [id] => 2 [name] => 中国 [pid] => 1 [4] => Array ( [id] => 4 [name] => 湖南 [pid] => 2 ) ) [3] => Array ( [id] => 3 [name] => 美国 [pid] => 1 )