(IP 
  (NP-SBJ 
    (CP 
      (WHNP-2 
        (-NONE- *OP*))
                    
      (CP 
        (IP 
          (NP-SBJ 
            (-NONE- *T*-2))
                    
          (VP 
            (VA 喜)))
                    
        (DEC 的))))
                    
  (VP 
    (VC 是)
                    
    (IP-PRD 
      (NP-SBJ 
        (NN 外贸)
                    
        (NN 总额))
                    
      (VP 
        (VP 
          (ADVP 
            (AD 仍))
                    
          (VP 
            (VV 保持)
                    
            (AS 着)
                    
            (NP-OBJ 
              (CP 
                (WHNP-3 
                  (-NONE- *OP*))
                    
                (CP 
                  (IP 
                    (NP-SBJ 
                      (-NONE- *T*-3))
                    
                    (VP 
                      (VA 强劲)))
                    
                  (DEC 的)))
                    
              (NP 
                (NN 增长)
                    
                (NN 势头)))))
                    
        (PU ，)
                    
        (CC 并)
                    
        (VP 
          (QP-ADV 
            (ADVP 
              (AD 连续))
                    
            (QP 
              (OD 第三)
                    
              (CLP 
                (M 年))))
                    
          (VP 
            (VV 实现)
                    
            (NP-OBJ 
              (NN 顺差))))))))
arg1: 
                    *T*-2