Translate eloquent-collections.md (v5.5) (#380)

* Translate eloquent-collections.md (v5.5)

* 同步原始文件最新一筆更新

* 12/7 修正部分翻譯問題

eloquent-collections.md

@@ -1,23 +1,23 @@
-# Eloquent: Collections
+# Eloquent: 集合
 
-- [Introduction](#introduction)
-- [Available Methods](#available-methods)
-- [Custom Collections](#custom-collections)
+- [介紹](#introduction)
+- [可用的方法](#available-methods)
+- [自訂集合](#custom-collections)
 
 <a name="introduction"></a>
-## Introduction
+## 介紹
 
-All multi-result sets returned by Eloquent are instances of the `Illuminate\Database\Eloquent\Collection` object, including results retrieved via the `get` method or accessed via a relationship. The Eloquent collection object extends the Laravel [base collection](/docs/{{version}}/collections), so it naturally inherits dozens of methods used to fluently work with the underlying array of Eloquent models.
+Eloquent 回傳的所有多結果集都會是 `Illuminate\Database\Eloquent\Collection` 物件的實例，包括透過 `get` 方法取得或透過關聯存取的結果。Eloquent 集合物件繼承 Laravel [基礎集合](/docs/{{version}}/collections)，所以它也自然的繼承了幾十種用於與底層 Eloquent 模型陣列的優雅方法。
 
-Of course, all collections also serve as iterators, allowing you to loop over them as if they were simple PHP arrays:
+當然，所有的集合也都可以作為迭代器，可以讓你迭代他們就像是簡單的 PHP 陣列：
 
     $users = App\User::where('active', 1)->get();
 
     foreach ($users as $user) {
         echo $user->name;
     }
 
-However, collections are much more powerful than arrays and expose a variety of map / reduce operations that may be chained using an intuitive interface. For example, let's remove all inactive models and gather the first name for each remaining user:
+然而，集合比陣列強大許多，並提供 map 或 reduce 等各種鏈結操作的直觀介面。例如，讓我們移除所有不活躍的模型，並收集其餘使用者的名字：
 
     $users = App\User::where('active', 1)->get();
 
@@ -28,14 +28,14 @@ However, collections are much more powerful than arrays and expose a variety of
         return $user->name;
     });
 
-> {note} While most Eloquent collection methods return a new instance of an Eloquent collection, the `pluck`, `keys`, `zip`, `collapse`, `flatten` and `flip` methods return a [base collection](/docs/{{version}}/collections) instance. Likewise, if a `map` operation returns a collection that does not contain any Eloquent models, it will be automatically cast to a base collection.
+> {note} 雖然大多數 Eloquent 集合會回傳新的實例，不過只有 `pluck`、`keys`、`zip`、`collapse`、`flatten` 和 `flip` 方法會回傳[基本的集合](/docs/{{version}}/collections)實例。同樣的，如果 `map` 操作會傳一個不具有任何 Eloquent 模型的集合，它會自動轉換成基本的集合。
 
 <a name="available-methods"></a>
-## Available Methods
+## 可用的方法
 
-### The Base Collection
+### 基本的集合
 
-All Eloquent collections extend the base [Laravel collection](/docs/{{version}}/collections) object; therefore, they inherit all of the powerful methods provided by the base collection class:
+所有 Eloquent 集合都繼承了基本的 [Laravel 集合](/docs/{{version}}/collections)物件。因此，它們繼承了基本集合類別提供的所有強大方法：
 
 <style>
     #collection-method-list > p {
@@ -98,7 +98,7 @@ All Eloquent collections extend the base [Laravel collection](/docs/{{version}}/
 [mode](/docs/{{version}}/collections#method-mode)
 [nth](/docs/{{version}}/collections#method-nth)
 [only](/docs/{{version}}/collections#method-only)
-[pad](docs/{{version}}/collections#method-pad)
+[pad](/docs/{{version}}/collections#method-pad)
 [partition](/docs/{{version}}/collections#method-partition)
 [pipe](/docs/{{version}}/collections#method-pipe)
 [pluck](/docs/{{version}}/collections#method-pluck)
@@ -143,9 +143,9 @@ All Eloquent collections extend the base [Laravel collection](/docs/{{version}}/
 </div>
 
 <a name="custom-collections"></a>
-## Custom Collections
+## 自訂集合
 
-If you need to use a custom `Collection` object with your own extension methods, you may override the `newCollection` method on your model:
+如果你需要使用自己擴充的方法來自訂 `Collection` 物件，可以在你的模型上覆寫 `newCollection` 方法：
 
     <?php
 
@@ -157,7 +157,7 @@ If you need to use a custom `Collection` object with your own extension methods,
     class User extends Model
     {
         /**
-         * Create a new Eloquent Collection instance.
+         * 建立一個新的 Eloquent 集合實例。
          *
          * @param  array  $models
          * @return \Illuminate\Database\Eloquent\Collection
@@ -168,4 +168,4 @@ If you need to use a custom `Collection` object with your own extension methods,
         }
     }
 
-Once you have defined a `newCollection` method, you will receive an instance of your custom collection anytime Eloquent returns a `Collection` instance of that model. If you would like to use a custom collection for every model in your application, you should override the `newCollection` method on a base model class that is extended by all of your models.
+你一旦定義了 `newCollection` 方法，在任何 Eloquent 回傳該模型的 `Collection` 實例的時候，你會接收到一個你的自訂集合的實例。如果你想要在應用程式中為每個模型使用自訂的集合，你應該在所有模型繼承的基本模型類別上覆寫 `newCollection` 方法。