Upgrade vid

docs-2.0/1.introduction/3.vid.md

@@ -48,19 +48,16 @@ VIDs can be generated via applications. Here are some tips:
 
 The data type of VIDs must be defined when you [create the graph space](../3.ngql-guide/9.space-statements/1.create-space.md). Once defined, it cannot be modified.
 
-<!--
-## "查询起始点"(`start vid`)与全局扫描
+## "Query `start vid` and global scan
 
-绝大多数情况下，Nebula Graph 的查询语句(`MATCH`, `GO`, `LOOKUP`)的执行计划，必须要通过一定方式找到查询起始点的 VID (`start vid`)。
+In most cases, the execution plan of query statements in Nebula Graph (`MATCH`, `GO`, and `LOOKUP`) must query the `start vid` in a certain way.
 
-定位 `start vid` 只有两种方式：
+There are only two ways to locate `start vid`:
 
-1. 例如 `GO FROM "player100" OVER` 是在语句中显式的指明 `start vid` 是 "player100";
+1. For example, `GO FROM "player100" OVER` explicitly indicates in the statement that `start vid` is "player100".
 
-2. 例如, `LOOKUP ON player WHERE player.name == "Tony Parker"` 或者 `MATCH (v:player {name:"Tony Parker"}) `，是通过属性 `player.name` 的索引来定位到 `start vid`；
+2. For example, `LOOKUP ON player WHERE player.name == "Tony Parker"` or `MATCH (v:player {name:"Tony Parker"})` locates `start vid` by the index of the property `player.name`.
 
+!!! Caution "You cannot perform a global scan without `start vid`"
 
-!!! caution 不能在没有 `start vid` 情况下进行全局扫描；
-
-    例如 `match (n) return n;` 会返回错误，因为此时无法定位到 `start vid`；这是一个全局扫描，因此被禁止。
--->
+     For example, `match (n) return n;` returns an error because `start vid` cannot be located at this time. As a global scan, it is forbidden.