Revert "translate to Chinese"

This reverts commit 20a22829ce555fd72532b4572112c7a8b6e18c29.

1 files changed, 58 insertions, 51 deletions

diff --git a/microkernel/mach/gnumach.mdwn b/microkernel/mach/gnumach.mdwn
index 6b32b852..88aa1432 100644
--- a/microkernel/mach/gnumach.mdwn
+++ b/microkernel/mach/gnumach.mdwn
@@ -7,75 +7,82 @@ document under the terms of the GNU Free Documentation License, Version 1.2 or
 any later version published by the Free Software Foundation; with no Invariant
 Sections, no Front-Cover Texts, and no Back-Cover Texts.  A copy of the license
 is included in the section entitled [[GNU Free Documentation
-License|/fdl]].translator:zlc;email:764582402@qq.com"]]"""]]
+License|/fdl]]."]]"""]]
 
-GNU Mach 是一款微内核， GNU Hurd 系统基于此微内核构建。其提供了进程间通信机制
-（Inter Process Communication，IPC），通过该机制将Hurd实现为分布式多服务器，
-Hurd据此实现接口，从而实现传统操作系统提供的服务。
+GNU Mach is the microkernel upon which a GNU Hurd system is based.  It provides
+an Inter Process Communication (IPC) mechanism that the Hurd uses to define
+interfaces for implementing in a distributed multi-server fashion the services
+a traditional operating system kernel provides.
 
-GNU Mach 作为 GNU Project 由 Hurd开发人员进行维护，并和 [[Mach]] 3.0 保持兼容。
+It is maintained by the Hurd developers for the GNU project and remains
+compatible with [[Mach]] 3.0.
 
-GNU Mach 主要的 [[设备驱动（device_drivers）]] 来自 Linux 2.0。这些驱动依靠
-Mach 中的 Linux [[emulation]] 层运行。
+The majority of GNU Mach's [[device_driver]]s are from Linux 2.0.  They were
+added using glue code, i.e., a Linux [[emulation]] layer in Mach.
 
-GNU Mach 运行在 x86 机上。详细信息参见
-[[硬件兼容列表（hardware_compatibility_list）]]，还有关于[[移植（ports）]]到其
-他架构上的信息。
+GNU Mach runs on x86 machines.  See the
+[[hardware_compatibility_list]] and information about
+[[ports]] to other architectures.
 
-最新版本：[[GNU Mach 1.6|news/2015-10-31-releases]]。
+The latest release is [[GNU Mach 1.6|news/2015-10-31-releases]].
 
 
+# Advantages of GNU Mach
 
-# GNU Mach 的优点
+GNU Mach is not the most advanced [[microkernel]] known to the planet, nor is
+it the fastest or smallest, but it has a rich set of [[interface]]s and some
+features which make it useful as the base of the [[Hurd]] system.
 
-GNU Mach 不是世界上已知最先进的 [[微内核（microkernel）]]，也不是最小、最快的，
-但是其拥有作为 [[Hurd]] 系统基础的，丰富的 [[接口（interfaces）]] 以及特性。
-
-
-  * **是开放源码的**
+  * **it's free software**
     
-	任何人在 [[GNU_General_Public_License_(GPL)|gpl]] 的授权下，都可以对其使用
-	，修改，并且二次发布。
+    Anybody can use, modify, and redistribute it under the terms of the
+    [[GNU_General_Public_License_(GPL)|gpl]].
 
-  * **是易于维护的**
+  * **it's built to survive**
     
-	作为一款 [[微内核（microkernel)]]，GNU Mach 没有实现太多其他操作系统都有的
-	特性，而是仅仅实现了一个用于在其上实现完整的操作系统的，所需特性的最小集
-	合。这意味着操作系统大量的代码将剥离 GNU Mach，在其外部进行维护；当这些代码
-	需要重构的时候，微内核的代码仍能保持稳定的兼容性。
-
-  * **是可于扩展的**
-
-  	Mach 能非常良好的支持 SMP 和网络集群技术。提供内核级的线程支持，并且内核本
-  	身都因此受益。在 [[IPC]] 层的网络透明使得系统可以提供机器边界的资源
-  	（目前 GNU Mach 不对NORMA IPC提供支持）。
-
-  * **是实际存在的**
+    As a [[microkernel]], GNU Mach doesn't implement a lot of the features
+    commonly found in an operating system, but only the bare minimum that is
+    required to implement a full operating system on top of it.  This means
+    that a lot of the operating system code is maintained outside of GNU Mach,
+    and while this code may go through a complete redesign, the code of the
+    microkernel can remain comparatively stable.
+
+  * **it's scalable**
+    
+    Mach is particularly well suited for SMP and network cluster techniques.
+    Thread support is provided at the kernel level, and the kernel itself takes
+    advantage of that.  Network transparency at the [[IPC]] level makes
+    resources of the system available across machine boundaries (with NORMA
+    IPC, currently not available in GNU Mach).
 
-	Mach 微内核是真实存在的，并且现在就可以使用。其不是一个研究或者倡议。用户不
-	需要等待，现在就可以开始使用并开发它。Mach 在过去曾经被用在很多操作系统中，
-	通常作为一个独立 UNIX 服务器的基础。在 GNU 系统，Mach 作为一个使用的多服务
-	器操作系统（[[Hurd]]）的基础。
+  * **it exists**
+    
+    The Mach microkernel is real software that works Right Now.  It is not a
+    research or a proposal.  You don't have to wait at all before you can start
+    using and developing it.  Mach has been used in many operating systems in
+    the past, usually as the base for a single UNIX server.  In the GNU system,
+    Mach is the base of a functional multi-server operating system, the
+    [[Hurd]].
 
 
-# 启动
+# Booting
 
-想要实际的使用这个内核并引导 GNU 操作系统，用户需要一个启动引导程序
-（boot loader）。不是所有的启动引导程序都能启动 GNU 操作系统，用户需要一个支持
-多重引导启动标准（multiboot standard）的启动引导程序。 GNU 操作系统可使用
-[[GNU_GRUB|grub]]，其支持非常多的操作系统，包括 GNU/Hurd。
+To actually use the kernel and boot the GNU operating system, you need a boot
+loader.  Not all boot loaders are capable to boot the GNU system, you need one
+that supports the multiboot standard.  The bootloader of the GNU system is
+[[GNU_GRUB|grub]], which supports a broad range of operating systems including
+GNU/Hurd.
 
 
-# 开发
+# Development
 
-  * [[参考手册（Reference_Manual）]]
-  * [[构建（Building）]]
-  * [[调试（Debugging）]]
-  * [[启动跟踪（Boot_Trace）]]
-  * [[内存管理（Memory_Management）]]
+  * [[Reference_Manual]]
+  * [[Building]]
+  * [[Debugging]]
+  * [[Boot_Trace]]
+  * [[Memory_Management]]
   * [[Continuation]]s
-  * [[抢占（Preemption）]]
-  * [[项目（Projects）]]
-      * [[规则（Rules）]]
+  * [[Preemption]]
+  * [[Projects]]
+      * [[Rules]]
       * [[Open Issues|tag/open_issue_gnumach]]
-