<volist name="list" id="v">
<b>{$v.type_en}</b>
<volist name="list2" id="v2">
<if condition=" $v.type_cod eq $v2.CK_type_cod ">
<br>=={$v2.ca1_en}
</if>

<volist name="list3" id="v3">
<if condition="$v.type_cod eq $v2.CK_type_cod && $v2.ca1_cod eq $v3.CK_ca1_cod ">
<br>三三
{$v3.ca2_en}
</if>

<!-- 第四个volist怎么遍历不出来 -->
<volist name="list4" id="v4">
<if condition="$v.type_cod eq $v2.CK_type_cod && $v2.ca1_cod eq $v3.CK_ca1_cod && $v3.ca2_cod eq $v4.CK_ca2_cod ">
<br>四四
{$v4.ca3_en}
</if>
</volist>

</volist>
</volist>
</volist>