(PP-LOC 
  (P 在)
                    
  (LCP 
    (IP 
      (NP-SBJ 
        (-NONE- *pro*))
                    
      (VP 
        (VV 作战)))
                    
    (LC 当中)))
                    
(PU ，)
                    
(NP-SBJ 
  (-NONE- *pro*))
                    
(VP 
  (VV 必须)
                    
  (VP 
    (VV 要)
                    
    (VP 
      (VP 
        (PP-ADV 
          (P 和)
                    
          (NP 
            (NN 队员)))
                    
        (VP 
          (VP 
            (VV 保持)
                    
            (NP-OBJ 
              (CP 
                (WHNP-1 
                  (-NONE- *OP*))
                    
                (CP 
                  (IP 
                    (NP-SBJ 
                      (-NONE- *T*-1))
                    
                    (VP 
                      (VA 良好)))
                    
                  (DEC 的)))
                    
              (NP 
                (NN 默契))))
                    
          (VP 
            (ADVP 
              (AD 交互))
                    
            (VP 
              (VV 掩护)))))
argm: 
                    在 作战 当中          
                
arg0: 
                    *pro*          
                
arg0: 
                    和 队员          
                
arg0: 
                    交互