Updated Unit of Work (markdown)

Unit-of-Work.md

@@ -109,14 +109,15 @@ public enum EntityChangeType { Insert, Update, Delete, SqlRaw }
 | Delete | The entity object is deleted |
 | SqlRaw | SQL statement executed |
 
-SqlRaw 目前有两处地方比较特殊：
-- 多对多联级更新导航属性的时候，对中间表的全部删除操作；
-- 通用仓储类 BaseRepository 有一个 Delete 方法，参数为表达式，而并非实体；
+SqlRaw currently has two special features:
+- When the navigation properties are updated in the many-to-many cascade, delete the relevant data in the intermediate table.
+- The common repository `BaseRepository` has a Delete method, and the parameter is an expression, not an entity.
+
 ```csharp
 int Delete(Expression<Func<TEntity, bool>> predicate);
 ```
 
-DbContext.SaveChanges，或者 Repository 对实体的 Insert/Update/Delete，或者 UnitOfWork.Commit 操作都会最多触发一次该事件。
+`DbContext.SaveChanges` or Repository's Insert/Update/Delete method of the entity, or `UnitOfWork.Commit` operation will trigger this event at most once.
 
 ## Reference