如何使用正则表达式多行模式

Question

我想从我的代码中匹配SYSTEM定义。系统块定义如下：

  "customized system name" = SYSTEM              
  TYPE             = PSZ   
  Other system definition
  FAN-SCHEDULE     = "S1 Sys1 (PSZ) Fan Sch"
   CONTROL-ZONE     = "EL1 South Perim Zn (G.S1)"
  ..

我的代码示例如下：

 $---- First SYSTEM block
 "EL1 Sys1 (PSZ) (G.C5)" = SYSTEM          
   TYPE             = PSZ    
  FAN-SCHEDULE     = "S1 Sys1 (PSZ) Fan Sch"
   CONTROL-ZONE     = "EL1 South Perim Zn (G.S1)"
   ..    

 $---- First ZONE block
"EL1 West Perim Pl Zn (G.W9)" = ZONE                
   TYPE             = CONDITIONED    
   ..    

 $---- Second SYSTEM block
"EL1 Sys1 (PSZ) (G.W4)" = SYSTEM              
   TYPE             = PSZ    
  FAN-SCHEDULE     = "S1 Sys1 (PSZ) Fan Sch"
   CONTROL-ZONE     = "EL1 South Perim Zn (G.S1)"
   ..    

 $---- Second ZONE block
"EL1 Core Pl Zn (G.C10)" = ZONE                
   TYPE             = CONDITIONED    
   ..

由于我的知识有限，因此创建了以下正则表达式以仅匹配系统块：

^"(.*?)= SYSTEM(.*?)..

但在正确匹配第一个系统块后，表达式将错误地匹配第二个区域和系统块：Mis-match screen shot

我想知道如何改善我的表达方式。