结果应该是:

Simon is
an
engineer

<!---------------------Try.xml------------>
<?xml version="1.0" encoding="UTF-8"?>
<?xml:stylesheet type="text/xsl" href="try.xsl" ?>
<data>
<Record>
  <Totals>
   <Row>
    <first_name>Simon</first_name>
    <Last_name></Last_name>
    <Salary>18,500</Salary>
    <Description>Simon is an engineer</Description>
   </Row>
   <Row>
    <first_name>Philip</first_name>
    <Last_name>Smith</Last_name>
    <Salary>500</Salary>
    <Description>Philip is an doctor</Description>
   </Row>
  </Totals>
</Record>
</data>

<!--------------------try.xsl--------------------------->
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:fo="http://www.w3.org/1999/XSL/Format">

<xsl:variable name="pos" select="position()" />
<xsl:template match="/data" name="getMessage">
      
   <xsl:param name="Message1" select="/data/Record/Totals/Row[$pos]/Description" />
   <xsl:param name="Link" select="''" />
   <xsl:param name="MS" select="''"/>

       <xsl:for-each select="Record/Totals/Row[$pos]/Description">       
         
            <xsl:if test="string-length($Link) &lt; 8">
                    <xsl:call-template name="getMessage">
                        <xsl:with-param name="MS" select="substring-before($Message1,'')" />
                        <xsl:with-param name="Message1" select="substring-after($Message1,'')" />
                        <xsl:with-param name="Link" select="concat($Link,$MS)" />
                    </xsl:call-template>
        
            </xsl:if>
                <xsl:value-of select="$Link" />
          <xsl:if test="string-length($Link) &gt; 8 or string-length($Link) = 8">
                 <xsl:value-of select="$Link" />
                  <xsl:text> </xsl:text>           
            </xsl:if>
        </xsl:for-each>
          
</xsl:template>
</xsl:stylesheet>