diff --git a/03_install/3.1_ubuntu.md b/03_install/3.1_ubuntu.md
index 8a15083..dc5c784 100644
--- a/03_install/3.1_ubuntu.md
+++ b/03_install/3.1_ubuntu.md
@@ -59,11 +59,8 @@ $ sudo apt install \
 ```bash
 $ curl -fsSL https://mirrors.aliyun.com/docker-ce/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
 
-
-## 官方源
-
-## $ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
-
+# 官方源
+# $ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
 ```
 
 然后，我们需要向 `sources.list` 中添加 Docker 软件源
@@ -73,15 +70,10 @@ $ echo \
   "deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://mirrors.aliyun.com/docker-ce/linux/ubuntu \
   $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
 
-
-## 官方源
-
-## $ echo \
-
-##   "deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
-
-##   $ stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
-
+# 官方源
+# $ echo \
+#   "deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
+#   $ stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
 ```
 
 >以上命令会添加稳定版本的 Docker APT 镜像源，如果需要测试版本的 Docker 请将 stable 改为 test。
@@ -103,12 +95,11 @@ $ sudo apt install docker-ce docker-ce-cli containerd.io
 > 若你想安装测试版的 Docker，请从 test.docker.com 获取脚本
 
 ```bash
-## $ curl -fsSL test.docker.com -o get-docker.sh
+# $ curl -fsSL test.docker.com -o get-docker.sh
 
 $ curl -fsSL get.docker.com -o get-docker.sh
 $ sudo sh get-docker.sh --mirror Aliyun
-## $ sudo sh get-docker.sh --mirror AzureChinaCloud
-
+# $ sudo sh get-docker.sh --mirror AzureChinaCloud
 ```
 
 执行这个命令后，脚本就会自动的将一切准备工作做好，并且把 Docker 的稳定 (stable) 版本安装在系统中。
diff --git a/03_install/3.2_debian.md b/03_install/3.2_debian.md
index b76228e..5c5c6d6 100644
--- a/03_install/3.2_debian.md
+++ b/03_install/3.2_debian.md
@@ -48,11 +48,8 @@ $ sudo apt-get install \
 ```bash
 $ curl -fsSL https://mirrors.aliyun.com/docker-ce/linux/debian/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
 
-
-## 官方源
-
-## $ curl -fsSL https://download.docker.com/linux/debian/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
-
+# 官方源
+# $ curl -fsSL https://download.docker.com/linux/debian/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
 ```
 
 然后，我们需要向 `sources.list` 中添加 Docker 软件源：
@@ -64,15 +61,10 @@ $ echo \
   "deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://mirrors.aliyun.com/docker-ce/linux/debian \
   $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
 
-
-## 官方源
-
-## $ echo \
-
-##   "deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/debian \
-
-##   $ stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
-
+# 官方源
+# $ echo \
+#   "deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/debian \
+#   $ stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
 ```
 
 >以上命令会添加稳定版本的 Docker APT 源，如果需要测试版本的 Docker 请将 stable 改为 test。Debian11 可能不使用 `/etc/apt/keyrings/`，如 gpg 错误可以考虑更换为 `/etc/apt/trusted.gpg.d`，见 [issue 15727](https://github.com/docker/docs/issues/15727)。
@@ -94,12 +86,11 @@ $ sudo apt-get install docker-ce docker-ce-cli containerd.io
 > 若你想安装测试版的 Docker，请从 test.docker.com 获取脚本
 
 ```bash
-## $ curl -fsSL test.docker.com -o get-docker.sh
+# $ curl -fsSL test.docker.com -o get-docker.sh
 
 $ curl -fsSL get.docker.com -o get-docker.sh
 $ sudo sh get-docker.sh --mirror Aliyun
-## $ sudo sh get-docker.sh --mirror AzureChinaCloud
-
+# $ sudo sh get-docker.sh --mirror AzureChinaCloud
 ```
 
 执行这个命令后，脚本就会自动的将一切准备工作做好，并且把 Docker 的稳定 (stable) 版本安装在系统中。
diff --git a/03_install/3.3_fedora.md b/03_install/3.3_fedora.md
index ac5a81b..fb9d6d0 100644
--- a/03_install/3.3_fedora.md
+++ b/03_install/3.3_fedora.md
@@ -54,14 +54,10 @@ $ sudo dnf config-manager \
 
 $ sudo sed -i 's/download.docker.com/mirrors.aliyun.com\/docker-ce/g' /etc/yum.repos.d/docker-ce.repo
 
-## 官方源
-
-## $ sudo dnf config-manager \
-
-##    --add-repo \
-
-##    https://download.docker.com/linux/fedora/docker-ce.repo
-
+# 官方源
+# $ sudo dnf config-manager \
+#    --add-repo \
+#    https://download.docker.com/linux/fedora/docker-ce.repo
 ```
 
 如果需要测试版本的 Docker 请使用以下命令：
@@ -102,12 +98,11 @@ $ sudo dnf -y install docker-ce-18.06.1.ce
 > 若你想安装测试版的 Docker，请从 test.docker.com 获取脚本
 
 ```bash
-## $ curl -fsSL test.docker.com -o get-docker.sh
+# $ curl -fsSL test.docker.com -o get-docker.sh
 
 $ curl -fsSL get.docker.com -o get-docker.sh
 $ sudo sh get-docker.sh --mirror Aliyun
-## $ sudo sh get-docker.sh --mirror AzureChinaCloud
-
+# $ sudo sh get-docker.sh --mirror AzureChinaCloud
 ```
 
 执行这个命令后，脚本就会自动的将一切准备工作做好，并且把 Docker 最新稳定 (stable) 版本安装在系统中。
diff --git a/03_install/3.4_centos.md b/03_install/3.4_centos.md
index e6da6f6..20cf785 100644
--- a/03_install/3.4_centos.md
+++ b/03_install/3.4_centos.md
@@ -56,14 +56,10 @@ $ sudo dnf config-manager \
 
 $ sudo sed -i 's/download.docker.com/mirrors.aliyun.com\/docker-ce/g' /etc/yum.repos.d/docker-ce.repo
 
-## 官方源
-
-## $ sudo dnf config-manager \
-
-##     --add-repo \
-
-##     https://download.docker.com/linux/centos/docker-ce.repo
-
+# 官方源
+# $ sudo dnf config-manager \
+#     --add-repo \
+#     https://download.docker.com/linux/centos/docker-ce.repo
 ```
 
 如果需要测试版本的 Docker 请执行以下命令：
diff --git a/03_install/3.5_raspberry-pi.md b/03_install/3.5_raspberry-pi.md
index d2bfc69..06aa32e 100644
--- a/03_install/3.5_raspberry-pi.md
+++ b/03_install/3.5_raspberry-pi.md
@@ -44,15 +44,10 @@ $ sudo install -m 0755 -d /etc/apt/keyrings
 $ curl -fsSL https://mirrors.aliyun.com/docker-ce/linux/raspbian/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
 $ sudo chmod a+r /etc/apt/keyrings/docker.gpg
 
-
-## 官方源
-
-## $ sudo install -m 0755 -d /etc/apt/keyrings
-
-## $ curl -fsSL https://download.docker.com/linux/raspbian/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
-
-## $ sudo chmod a+r /etc/apt/keyrings/docker.gpg
-
+# 官方源
+# $ sudo install -m 0755 -d /etc/apt/keyrings
+# $ curl -fsSL https://download.docker.com/linux/raspbian/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
+# $ sudo chmod a+r /etc/apt/keyrings/docker.gpg
 ```
 
 然后，我们需要向 `sources.list` 中添加 Docker 软件源：
@@ -62,15 +57,10 @@ $ echo \
   "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://mirrors.aliyun.com/docker-ce/linux/raspbian \
   $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
 
-
-## 官方源
-
-## $ echo \
-
-##   "deb [arch=$ signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/raspbian \
-
-##   $ stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
-
+# 官方源
+# $ echo \
+#   "deb [arch=$ signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/raspbian \
+#   $ stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
 ```
 
 >以上命令会添加稳定版本的 Docker APT 源，如果需要测试版本的 Docker 请将 stable 改为 test。