(IP 
  (NP-SBJ 
    (CP 
      (WHNP-1 
        (-NONE- *OP*))
                    
      (CP 
        (IP 
          (NP-SBJ 
            (-NONE- *T*-1))
                    
          (VP 
            (VP 
              (PP-MNR 
                (P 靠著)
                    
                (NP 
                  (NN 雷射)
                    
                  (NN 光线)))
                    
              (VP 
                (VV 读取)
                    
                (NP-OBJ 
                  (NN 信号))))
                    
            (PU 、)
                    
            (VP 
              (ADVP 
                (AD 不))
                    
              (VP 
                (VV 怕)
                    
                (NP-OBJ 
                  (NN 磁头))
                    
                (IP 
                  (NP-SBJ 
                    (-NONE- *PRO*))
                    
                  (VP 
                    (VV 刮损)))))))
                    
        (DEC 的)))
                    
    (NP 
      (NN 光碟)))
                    
  (PU ，)
                    
  (VP 
    (VV 可以)
                    
    (VP 
      (BA 将)
                    
      (IP-OBJ 
        (NP-SBJ 
          (NN 影音)
                    
          (NN 资料))
                    
        (VP 
          (ADVP 
            (AD 长久))
                    
          (VP 
            (VV 保存)))))))
arg0: 
                    *PRO*