diff --git a/get-started/_common/intro/_packages_serving.md b/get-started/_common/intro/_packages_serving.md
index 546f15ba..fb21000a 100644
--- a/get-started/_common/intro/_packages_serving.md
+++ b/get-started/_common/intro/_packages_serving.md
@@ -1,35 +1,44 @@
-## Hosting and serving packages
+
+## 包托管和服务
-Packages are hosted in **repositories** based on
+
+包托管在位于[更新框架](https://theupdateframework.io/){:.external} (TUF)的**仓库**中。该框架是一种规范,旨在实现软件更新的安全交付。 TUF 仓库通过附加到记录的签名元数据来保护更新,这些记录可根据已知的可信公钥和私钥进行验证。
-Packages within a repository are identified by a URL with the
-`fuchsia-pkg` scheme:
+
+仓库中的包通过 `fuchsia-pkg` 格式的 URL 标识:
```none
fuchsia-pkg://{{ '' }}repo-hostname{{ '' }}/{{ '' }}pkg-name{{ '' }}#{{ '' }}resource-path{{ '' }}
```
-* `repo-hostname`: Hostname of a trusted package repository, such as `fuchsia.com`.
+
+* `repo-hostname`:受信任的软件包仓库的主机名,比如,`fuchsia.com`。
+* `pkg-name`:本仓库中包的唯一标识。
+* `resource-path`:包中包含的资源,比如一个组件。
-![Diagram showing how packages are resolved from a TUF repository and cached
-locally on the device.]
+
+![如何解析 TUF 仓库中的包并在设备本地缓存的示意图]
(/get-started/images/intro/package-resolver.png){: width="751"}
-Requests for software on a Fuchsia device are handled by the
+
+Fuchsia 设备上的软件请求由**package resolver**处理。包解析器确定系统是否已经在本地缓存了包。如果没有,解析器从存储库中获取 meta.far 并更新必要的内容 BLOB。