Updated Unit of Work (markdown)

Unit-of-Work.md

@@ -1,41 +1,43 @@
 [中文](%e5%b7%a5%e4%bd%9c%e5%8d%95%e5%85%83) | **English**
 
-UnitOfWork 可将多个仓储放在一个单元管理执行，最终通用 Commit 执行所有操作，内部采用了数据库事务；
+Unit of work can put multiple repositories into one unit for internal management and execution, and finally execute all operations through `Commit`. Unit of work internally uses database transactions.
 
 ```csharp
 static IFreeSql fsql = new FreeSql.FreeSqlBuilder()
-  .UseConnectionString(FreeSql.DataType.MySql, connectionString)
+    .UseConnectionString(FreeSql.DataType.MySql, connectionString)
-  .UseAutoSyncStructure(true) //自动同步实体结构到数据库
+    //Automatically synchronize the entity structure to the database.
-  .Build(); //请务必定义成 Singleton 单例模式
+    .UseAutoSyncStructure(true) 
+    //Be sure to define as singleton mode
+    .Build(); 
 ```
 
-## 如何使用
+## Usage
 
 ```csharp
 using (var uow = fsql.CreateUnitOfWork())
 {
   var songRepo = fsql.GetRepository<Song>();
   var userRepo = fsql.GetRepository<User>();
-  songRepo.UnitOfWork = uow; //手工绑定工作单元
+  songRepo.UnitOfWork = uow; //Manually bind unit of work
   userRepo.UnitOfWork = uow;
 
   songRepo.Insert(new Song());
   userRepo.Update(...);
 
   uow.Orm.Insert(new Song()).ExecuteAffrows();
-  //注意：uow.Orm 和 fsql 都是 IFreeSql
+  //Note: uow.Orm and fsql are both IFreeSql
-  //uow.Orm CRUD 与 uow 是一个事务（理解为临时 IFreeSql）
+  //uow.Orm CRUD and uow are the same transaction (understood as temporary IFreeSql)
-  //fsql CRUD 与 uow 不在一个事务
+  //fsql CRUD and uow are not in the same transaction
 
   uow.Commit();
 }
 ```
 
-参考：[在 asp.net core 中使用 TransactionalAttribute + UnitOfWorkManager 实现多种事务传播](https://github.com/dotnetcore/FreeSql/issues/289)
+Reference: [Use TransactionalAttribute + UnitOfWorkManager in ASP.NET Core to achieve multiple transaction propagation](https://github.com/dotnetcore/FreeSql/issues/289)
 
-## 接口定义
+## Interface Definition
 
-uow.GetOrBeginTransaction() 方法可获取事务对象。
+The `uow.GetOrBeginTransaction()` method can get the transaction object.
 
 ```csharp
 public interface IUnitOfWork : IDisposable