                                                                              
         
    1                                                 180            2  3         1080           2160                                  300                                                                                                 
   2 :                                                                             纸老虎             折腾                                      
   3                                                        
   4 :                                     
        
     1:         
                                   
     2:                                                                                                          
           
            
    3                                             
          
                                
    2:         
                                   
   3:                 