Update Taditional translation of "Mirroring FreeBSD"(articles/hubs) to SVN#1026

Taditional translation SVN repo:	https://opensvn.csie.org/freebsddoc

Approved by:	delphij (mentor)

zh_TW.Big5/articles/hubs/article.sgml

@@ -899,26 +899,25 @@ cvspserver stream tcp nowait root /usr/bin/cvs cvs -f -l -R -T /anoncvstmp --all
   <sect1 id="mirror-official">
     <title>Official Mirrors</title>
     <para>
-      Official mirrors are mirrors that
+      Official mirrors 站為具有下列條件的 mirror 站
       <itemizedlist>
         <listitem>
           <para>
-            a) have a <hostid>FreeBSD.org</hostid> DNS entry
-            (usually a CNAME).
+            a) 有 <hostid>FreeBSD.org</hostid> DNS entry
+            (通常為 CNAME 紀錄)。
           </para>
         </listitem>
         <listitem>
           <para>
-            b) are listed as an official mirror in the FreeBSD
-               documentation (like handbook).
+            b) 被 FreeBSD 文件列為 offical mirror 站(像是 handbook)。
           </para>
         </listitem>
       </itemizedlist>
 
-      So far to distinguish official mirrors.
-      Official mirrors are not necessarily <emphasis>Tier-1</emphasis>-mirrors.
-      However you probably will not find a <emphasis>Tier-1</emphasis>-mirror,
-      that is not also official.
+      除了以上述方式來分辨是否為 official mirrors 站之外，
+      Official mirrors 站不一定得為 <emphasis>Tier-1</emphasis>-mirrors 站。
+      然而，只要是 <emphasis>Tier-1</emphasis>-mirror 站的話，就一定會是 
+      official mirrors 站。
     </para>
     <sect2 id="mirror-official-requirements">
       <title>Special Requirements for official (tier-1) mirrors</title>