diff --git a/Configuring a remote for a fork.md b/Configuring a remote for a fork.md
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@@ -0,0 +1,3 @@
+
+
+参考
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diff --git a/Pushing to a remote.md b/Pushing to a remote.md
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+Pushing to a remote
+====
+
+参考
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diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -64,6 +64,7 @@ Chinese translation of the Github Help(https://help.github.com/index.html) and t
##Collaborating 合作
+* [Syncing a fork 同步一个 fork](Syncing a fork.md)
* [What happens to forks when a repository is deleted or changes visibility 当库删除或者改变了可见性,其 fork 发生了什么](https://github.com/waylau/github-help/blob/master/What%20happens%20to%20forks%20when%20a%20repository%20is%20deleted%20or%20changes%20visibility%20%E5%BD%93%E5%BA%93%E5%88%A0%E9%99%A4%E6%88%96%E8%80%85%E6%94%B9%E5%8F%98%E4%BA%86%E5%8F%AF%E8%A7%81%E6%80%A7%2C%E5%85%B6%20fork%20%E5%8F%91%E7%94%9F%E4%BA%86%E4%BB%80%E4%B9%88.md)
##Managing projects 管理项目
diff --git a/Syncing a fork.md b/Syncing a fork.md
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+++ b/Syncing a fork.md
@@ -1,4 +1,61 @@
-Syncing a fork
+Syncing a fork 同步一个 fork
====
-*ο*
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+同步 fork, 使与上游仓库保持一致。
+
+*提示:在您同步你的 fork 和上游仓库时,您必须[配置远程指向 Git 的上游仓库](Configuring a remote for a fork.md)。*
+
+1. 打开终端(Mac)或者命令提示符 (Windows 或者 Linux)
+2. 修改当前工作目录到你本地项目
+3. 获取分支和他们来自上游库的各自的提交。提交到 `master` 将会存储到本地的分支 `upstream/master`
+
+```java
+
+ git fetch upstream
+ # remote: Counting objects: 75, done.
+ # remote: Compressing objects: 100% (53/53), done.
+ # remote: Total 62 (delta 27), reused 44 (delta 9)
+ # Unpacking objects: 100% (62/62), done.
+ # From https://github.com/ORIGINAL_OWNER/ORIGINAL_REPOSITORY
+ # * [new branch] master -> upstream/master
+
+```
+4. 检出你 fork 的本地`master`分支
+
+```java
+
+ git checkout master
+ # Switched to branch 'master'
+
+```
+
+5. 合并 `upstream/maste`的变化到你本地 `master`分支。这样你 fork 的 `master`会和上游仓库同步,而不会丢失你本地的变化。
+
+```java
+
+ git merge upstream/master
+ # Updating a422352..5fdff0f
+ # Fast-forward
+ # README | 9 -------
+ # README.md | 7 ++++++
+ # 2 files changed, 7 insertions(+), 9 deletions(-)
+ # delete mode 100644 README
+ # create mode 100644 README.md
+
+```
+
+如果你本地分支没有唯一的提交,Git 将会提示 "fast-forward":
+
+```java
+
+ git merge upstream/master
+ # Updating 34e91da..16c56ad
+ # Fast-forward
+ # README.md | 5 +++--
+ # 1 file changed, 3 insertions(+), 2 deletions(-)
+
+```
+
+*提示:同步你的 fork 仅更新你库的本地副本。更新在 GitHub 上 fork,你必须 [push 你的变化](Pushing to a remote.md)。*
+
+*参考*:
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