How to specify two Fields in Lucene QueryParser?

I read How to incorporate multiple fields in QueryParser? but i didn't get it.

At the moment i have a very strange construction like:

parser = New QueryParser("bodytext", analyzer)
parser2 = New QueryParser("title", analyzer)
query = parser.Parse(strSuchbegriff)
query2 = parser.Parse(strSuchbegriff)

What can i do for something like:

parser = New QuerParser ("bodytext" , "title",analyzer)
query =parser.Parse(strSuchbegriff) 

so the Parser looks for the searching word in the field "bodytext" an in the field "title".