(NP-TMP 
  (NT 过去))
                    
(NP-SBJ 
  (NP-PN 
    (NR 台湾))
                    
  (NP 
    (NN 淡水)
                    
    (NN 鱼)))
                    
(VP 
  (ADVP 
    (AD 几乎))
                    
  (ADVP 
    (AD 都))
                    
  (ADVP 
    (AD 没有))
                    
  (VP 
    (SB 被)
                    
    (VP 
      (VV 检出)
                    
      (IP-OBJ 
        (NP-SBJ 
          (-NONE- *PRO*))
                    
        (VP 
          (VV 含有)
                    
          (NP-OBJ 
            (NN 机滤)))))
argm: 
                    过去          
                
arg1: 
                    台湾 淡水 鱼          
                
argm: 
                    几乎          
                
argm: 
                    都          
                
argm: 
                    没有          
                
arg1: 
                    含有 机滤