使用xslt删除与XML相似的节点上的删除不完全相同

If I have this xml file:

如果我有这个xml文件：

<root> 
        <node id="a">
            <section id="a_1">
               <item id="0">
                    <attribute>
                        <color>Red</color>
                    </attribute>
               </item>
            </section>

            <section id="a_2">
               <item id="0">
                    <attribute>
                        <color>Red</color>
                    </attribute>
               </item>
            </section>            
        </node>

        <node id="b">
            <section id="b_1">

                <user id="b_1a">
                    <attribute>
                        <name>John</name>
                    </attribute>
                </user>

                <user id="b_1b">
                    <attribute>a</attribute>
                </user>

            </section>

            <section id="b_1" method="create">

                <user id="b_1a">
                    <attribute>
                        <name>John</name>
                    </attribute>
                </user>

                <user id="b_1c">
                    <attribute>a</attribute>
                </user>

            </section>

            <section id="b_2">                
                <user id="b_1a">
                    <attribute>
                        <name>John</name>
                    </attribute>
                </user>

            </section>
        </node>
 </root>
<roo