[sync] 2019/8/9

src/docs/codelabs/layout-basics.md

@@ -124,36 +124,36 @@ property to control how the `Row` aligns its children within that space.
 
 There are six different values available in the `MainAxisAlignment` enum:
 
-`MainAxisAlignment` 有六种不同的枚举值。
+`MainAxisAlignment` 有六种不同的枚举值：
 
-* `MainAxisAligment.start`<br>
+* `MainAxisAlignment.start`<br>
    Place all children as close to the start of the `Row` as possible
    (for left-to-right rows, this is the left side).
 
    将所有的 children 尽可能向 `Row` 的 start 方向排列（如果是从左到右，那就是靠左排列）。
 
-* `MainAxisAligment.end`<br>
+* `MainAxisAlignment.end`<br>
   Place all children as close to the end of the `Row` as possible.
 
   将所有的 children 尽可能向 `Row` 的 end 方向排列。
 
-* `MainAxisAligment.center`<br>
+* `MainAxisAlignment.center`<br>
   Group the children together in the center of the `Row`.
 
   将 children 聚在 `Row` 主轴的中间位置。
 
-* `MainAxisAligment.spaceBetween`<br>
+* `MainAxisAlignment.spaceBetween`<br>
   Any extra space is divided evenly and used to make gaps between the children.
 
   将主轴空白位置进行均分，用来在 children 之间制造间隔，首尾 children 距边缘没有间隙。
 
-* `MainAxisAligment.spaceEvenly`<br>
+* `MainAxisAlignment.spaceEvenly`<br>
   Just like `spaceBetween`, except the spots before the first child
   and after the last one also count as gaps.
 
   很像 `spaceBetween`，除了让首尾 children 距边缘也有相同的间隙。
 
-* `MainAxisAligment.spaceAround`<br>
+* `MainAxisAlignment.spaceAround`<br>
   Just like `spaceEvenly`, only the first and last gaps get 50% of the
   amount used between children.
 

src/docs/cookbook/animation/animated-container.md

@@ -3,7 +3,7 @@ title: Animate the properties of a container
 title: Container 里的动画渐变效果
 prev:
   title: Animate a page route transition
-  path: /docs/cookbook/animation/page-route-animation
+  path: /docs/cookbook/animation/physics-simulation
 next:
   title: Fade a Widget in and out
   title: Widget 的淡入淡出效果

src/docs/cookbook/animation/page-route-animation.md

@@ -2,13 +2,11 @@
 title: Animate a page route transition
 title: 为页面切换加入动画效果
 next:
-  title: Animate the properties of a container
-  title: Container 里的动画渐变效果
-  path: /docs/cookbook/animation/animated-container
+  title: Animate a widget using a physics simulation
+  title: 在物理模拟器上构建动画
+  path: /docs/cookbook/animation/physics-simulation
 ---
 
-# Animate a page route transition
-
 A design language, such as Material, defines standard behaviors when
 transitioning between routes (or screens). Sometimes, though, a custom
 transition between screens can make an app more unique. To help,
@@ -29,7 +27,7 @@ To create a custom page route transition, this recipe uses the following steps:
 4. Use a `CurveTween`
 5. Combine the two `Tween`s
 
-# 1. Set up a PageRouteBuilder
+## 1. Set up a PageRouteBuilder
 
 To start, use a
 [PageRouteBuilder]({{site.api}}/flutter/widgets/PageRouteBuilder-class.html)
@@ -38,10 +36,10 @@ to create a [Route]({{site.api}}/flutter/widgets/Route-class.html).
 (`pageBuilder`), and one to build the route's transition (`transitionsBuilder`).
 
 {{site.alert.note}}
-The `child` parameter in transitionsBuilder is the widget returned from
-pageBuilder. The `pageBuilder` function is only called the first time the route
-is built. The framework can avoid extra work because `child` stays the same
-throughout the transition.
+  The `child` parameter in transitionsBuilder is the widget returned from
+  pageBuilder. The `pageBuilder` function is only called the first time the
+  route is built. The framework can avoid extra work because `child` stays the
+  same throughout the transition.
 {{site.alert.end}}
 
 The following example creates two routes: a home route with a "Go!" button, and
@@ -93,7 +91,7 @@ class Page2 extends StatelessWidget {
 }
 ```
 
-# 2. Create a Tween
+## 2. Create a Tween
 
 To make the new page animate in from the bottom, it should animate from
 `Offset(0,1)` to `Offset(0, 0)` (usually defined using the `Offset.zero`
@@ -116,7 +114,7 @@ transitionsBuilder: (context, animation, secondaryAnimation, child) {
 },
 ```
 
-# 3. Use an AnimatedWidget
+## 3. Use an AnimatedWidget
 
 Flutter has a set of widgets extending
 [AnimatedWidget]({{site.api}}/flutter/widgets/AnimatedWidget-class.html)
@@ -142,7 +140,7 @@ transitionsBuilder: (context, animation, secondaryAnimation, child) {
 },
 ```
 
-# 4. Use a CurveTween
+## 4. Use a CurveTween
 
 Flutter provides a selection of easing curves that adjust the rate of the
 animation over time. The
@@ -162,7 +160,7 @@ var curveTween = CurveTween(curve: curve);
 This new Tween still produces values from 0 to 1. In the next step, it will be
 combined the `Tween<Offset>` from step 2.
 
-# 5. Combine the two Tweens
+## 5. Combine the two Tweens
 
 To combine the tweens, use
 [chain()]({{site.api}}/flutter/animation/Animatable/chain.html):
@@ -217,7 +215,7 @@ transitionsBuilder: (context, animation, secondaryAnimation, child) {
 }
 ```
 
-# Complete Example
+## Complete Example
 
 ```dart
 import 'package:flutter/material.dart';