重新生成注释，并fix错误

Author: ChenHuajun

postgresql/doc/src/sgml/catalogs.sgml

@@ -2694,7 +2694,7 @@ ____________________________________________________________________________-->
       </para>
       <para>
        The defined collation of the column, or zero if the column is
-       not of a collatable data type.
+       not of a collatable data type
       </para></entry>
      </row>
 ____________________________________________________________________________-->
@@ -4966,7 +4966,7 @@ ____________________________________________________________________________-->
        (references <link linkend="catalog-pg-type"><structname>pg_type</structname></link>.<structfield>oid</structfield>)
       </para>
       <para>
-       The domain this constraint is on; 0 if not a domain constraint
+       The domain this constraint is on; zero if not a domain constraint
       </para></entry>
      </row>
 ____________________________________________________________________________-->
@@ -10142,7 +10142,7 @@ ____________________________________________________________________________-->
        (references <link linkend="catalog-pg-operator"><structname>pg_operator</structname></link>.<structfield>oid</structfield>)
       </para>
       <para>
-       Negator of this operator,  (zero if none)
+       Negator of this operator (zero if none)
       </para></entry>
      </row>
 ____________________________________________________________________________-->
@@ -11439,7 +11439,7 @@ ____________________________________________________________________________-->
        <structfield>proargmodes</structfield> <type>char[]</type>
       </para>
       <para>
-       An array of the data types of the function arguments.  This include
+       An array of the modes of the function arguments, encoded as
        <literal>i</literal> for <literal>IN</literal> arguments,
        <literal>o</literal> for <literal>OUT</literal> arguments,
        <literal>b</literal> for <literal>INOUT</literal> arguments,
@@ -14257,7 +14257,6 @@ ____________________________________________________________________________-->
        <literal>m</literal> for most common values (MCV) list statistics, and
        <literal>e</literal> for expression statistics
       </para></entry>
-      </para></entry>
      </row>
 ____________________________________________________________________________-->
      <row>
@@ -14663,7 +14662,7 @@ ____________________________________________________________________________-->
        <structfield>subenabled</structfield> <type>bool</type>
       </para>
       <para>
-       If true, the subscription is enabled and should be replicating.
+       If true, the subscription is enabled and should be replicating
       </para></entry>
      </row>
 ____________________________________________________________________________-->
@@ -25021,7 +25020,7 @@ ____________________________________________________________________________-->
        (references <link linkend="catalog-pg-authid"><structname>pg_authid</structname></link>.<structfield>rolname</structfield>)
       </para>
       <para>
-       Owner of the extended statistics
+       Owner of the extended statistics object
       </para></entry>
      </row>
 ____________________________________________________________________________-->

postgresql/doc/src/sgml/config.sgml

@@ -2583,6 +2583,16 @@ ____________________________________________________________________________-->
         有效的版本为 <xref linkend="guc-ssl-min-protocol-version"/>, 添加一个空字符串，允许任何协议版本。
         默认为允许任何版本。设置最大协议版本主要用于测试，或者某个组件在与较新的协议配合工作时出现了问题。
        </para>
+
+<!--==========================orignal english content==========================
+       <para>
+        This parameter can only be set in the <filename>postgresql.conf</filename>
+        file or on the server command line.
+       </para>
+____________________________________________________________________________-->
+       <para>
+        此参数只能在<filename>postgresql.conf</filename>文件或服务器命令行中设置。
+       </para>
       </listitem>
      </varlistentry>
 
@@ -4267,7 +4277,7 @@ ____________________________________________________________________________-->
 <!--==========================orignal english content==========================
         <para>
          When running a standby server, you must set this parameter to the
-         same or higher value than on the master server. Otherwise, queries
+         same or higher value than on the primary server. Otherwise, queries
          will not be allowed in the standby server.
         </para>
 ____________________________________________________________________________-->
@@ -14321,6 +14331,43 @@ ____________________________________________________________________________-->
       </listitem>
      </varlistentry>
 
+     <varlistentry id="guc-transaction-isolation" xreflabel="transaction_isolation">
+<!--==========================orignal english content==========================
+      <term><varname>transaction_isolation</varname> (<type>enum</type>)
+      <indexterm>
+       <primary>transaction isolation level</primary>
+      </indexterm>
+      <indexterm>
+       <primary><varname>transaction_isolation</varname> configuration parameter</primary>
+      </indexterm>
+      </term>
+____________________________________________________________________________-->
+      <term><varname>transaction_isolation</varname> (<type>enum</type>)
+      <indexterm>
+       <primary>transaction isolation level</primary>
+      </indexterm>
+      <indexterm>
+       <primary><varname>transaction_isolation</varname>配置参数</primary>
+      </indexterm>
+      </term>
+      <listitem>
+<!--==========================orignal english content==========================
+       <para>
+        This parameter reflects the current transaction's isolation level.
+        At the beginning of each transaction, it is set to the current value
+        of <xref linkend="guc-default-transaction-isolation"/>.
+        Any subsequent attempt to change it is equivalent to a <xref
+        linkend="sql-set-transaction"/> command.
+       </para>
+____________________________________________________________________________-->
+       <para>
+        此参数反映当前事务的隔离级别。在每个事务开始时，它被设置为
+        <xref linkend="guc-default-transaction-isolation"/>的当前值。
+        任何后续更改它的尝试都相当于<xref linkend="sql-set-transaction"/>命令。
+       </para>
+      </listitem>
+     </varlistentry>
+
      <varlistentry id="guc-transaction-read-only" xreflabel="transaction_read_only">
 <!--==========================orignal english content==========================
       <term><varname>transaction_read_only</varname> (<type>boolean</type>)