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vesoft-inc · Mar 24, 2020 · b1a83c8 · b1a83c8
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diff --git a/...atement-syntax/2.data-query-and-manipulation-statements/delete-vertex-syntax.md b/...atement-syntax/2.data-query-and-manipulation-statements/delete-vertex-syntax.md
@@ -1,6 +1,6 @@
 # Delete Vertex 语法
 
-**Nebula Graph** 支持给定点 ID，删除这些顶点和与其相关联的入边和出边，语法如下：
+**Nebula Graph** 支持给定点 ID（或 hash ID、UUID），删除这些顶点和与其相关联的入边和出边，语法如下：
 
 ```ngql
 DELETE VERTEX <vid_list>

diff --git a/...ations/server-administration/account-management-statements/grant-role-syntax.md b/...ations/server-administration/account-management-statements/grant-role-syntax.md
@@ -6,8 +6,8 @@ GRANT ROLE <role_type> ON <space> TO <user>
 
 使用 `GRANT` 语句为 **Nebula Graph** 用户授予权限。使用 `GRANT` 必须拥有 `GRANT` 权限。
 
-目前 **Nebula Graph** 包含四种角色权限：`GOD`、`ADMIN`、`DBA`、`USER` 和 `GUEST`。
+目前 **Nebula Graph** 包含五种角色权限：`GOD`、`ADMIN`、`DBA`、`USER` 和 `GUEST`。
 
-通常，需要先使用 `CREATE USER` 创建帐户，然后再使用 `GRANT` 为其授予权限。待授予的角色以及用户帐户必须存在，否则会发生错误。
+通常，需要先使用 `CREATE USER` 创建帐户，然后再使用 `GRANT` 为其授予权限（假设你拥有 `CREATE` 和 `GRANT` 权限）。待授予的角色以及用户帐户必须存在，否则会发生错误。
 
 `<space>` 必须指定为存在的图空间，否则会发生错误。
diff --git a/...atement-syntax/2.data-query-and-manipulation-statements/delete-vertex-syntax.md b/...atement-syntax/2.data-query-and-manipulation-statements/delete-vertex-syntax.md
@@ -1,6 +1,6 @@
 # Delete Syntax
 
-Given a list of vertices IDs, **Nebula Graph** supports `DELETE` the vertices and their associated in and out edges, syntax as the follows:
+Given a list of vertices IDs, hash IDs or UUIDs, **Nebula Graph** supports `DELETE` the vertices and their associated in and out edges, syntax as the follows:
 
 ```ngql
 DELETE VERTEX <vid_list>

diff --git a/...ations/server-administration/account-management-statements/grant-role-syntax.md b/...ations/server-administration/account-management-statements/grant-role-syntax.md
@@ -4,10 +4,10 @@
 GRANT ROLE <role_type> ON <space> TO <user>
 ```
 
-The `GRANT` statement assigns roles to **Nebula Graph** user accounts. To use `GRANT`, you must have the `GRANT` privilege.
+The `GRANT` statement assigns role to **Nebula Graph** user account. To use `GRANT`, you must have the `GRANT` privilege.
 
-Currently, there are four roles in **Nebula Graph**: `GOD`, `ADMIN`, `DBA`, `USER` and `GUEST`.
+Currently, there are five roles in **Nebula Graph**: `GOD`, `ADMIN`, `DBA`, `USER` and `GUEST`.
 
-Normally, a database administrator first uses `CREATE USER` to create an account then uses `GRANT` to define its privileges. Each role and user account to be granted must exist, or errors will occur.
+Normally, first use `CREATE USER` to create an account then use `GRANT` to define its privileges (assume you have the `CREATE` and `GRANT` privilege). Each role and user account to be granted must exist, or errors will occur.
 
 The `<space>` clause must be specified as an existed graph space or an error will occur.