Merge pull request #58 from 70data/2.0-cn

更新 15 16 部分13

Author: dingyiming

src/api/index.md

@@ -1564,30 +1564,30 @@ All lifecycle hooks automatically have their `this` context bound to the instanc
   - [Data Binding Syntax - interpolations](/guide/syntax.html#Text)
   - [Components - Cheap Static Components with v-once](/guide/components.html#Cheap-Static-Components-with-v-once)
 
-## Special Attributes
+## 特殊元素
 
 ### key
 
 - **Expects:** `string`
 
-  The `key` special attribute is primarily used as a hint for Vue's virtual DOM algorithm to identify VNodes when diffing the new list of nodes against the old list. Without keys, Vue uses an algorithm that minimizes element movement and tries to patch/reuse elements of the same type in-place as much as possible. With keys, it will reorder elements based on the order change of keys, and elements with keys that are no longer present will always be removed/destroyed.
+  `key`的特殊属性主要用在Vue的虚拟DOM算法，在新旧nodes对比时辨识VNodes。如果不使用key，Vue会使用一种最大限度减少动态元素并且尽可能的尝试修复/再利用相同类型元素的算法。使用key，它会基于key的变化重新排列元素顺序，并且会移除keys不存在的元素。
 
-  Children of the same common parent must have **unique keys**. Duplicate keys will cause render errors.
+  相同公共父元素的子元素必须有**独特的key**。重复的key会造成渲染错误。
 
-  The most common use case is combined with `v-for`:
+  最常见的用例是结合`v-for`:
 
   ``` html
   <ul>
     <li v-for="item in items" :key="item.id">...</li>
   </ul>
   ```
 
-  It can also be used to force replacement of an element/component instead of reusing it. This can be useful when you want to:
+  它也可以用于强制替换元素/组件而不是重复使用它。当你遇到如下场景时它可能会很有用:
 
-  - Properly trigger lifecycle hooks of a component
-  - Trigger transitions
+  - 正确的触发组件的生命周期hooks
+  - 触发转换
 
-  For example:
+  例如:
 
   ``` html
   <transition>
@@ -1788,10 +1788,10 @@ All lifecycle hooks automatically have their `this` context bound to the instanc
 
 - **See also:** [Content Distribution with Slots](/guide/components.html#Content-Distribution-with-Slots)
 
-## VNode Interface
+## VNode接口
 
-- Please refer to the [VNode class declaration](https://github.com/vuejs/vue/blob/dev/src/core/vdom/vnode.js).
+- 请参考[VNode class declaration](https://github.com/vuejs/vue/blob/dev/src/core/vdom/vnode.js).
 
-## Server-Side Rendering
+## 服务端渲染
 
-- Please refer to the [vue-server-renderer package documentation](https://github.com/vuejs/vue/tree/dev/packages/vue-server-renderer).
+- 请参考[vue-server-renderer package documentation](https://github.com/vuejs/vue/tree/dev/packages/vue-server-renderer).