diff --git a/EntityComponentSystemSamples/ECSSamples/Assets/Advanced/Boids/Scripts/BoidSchool.cs b/EntityComponentSystemSamples/ECSSamples/Assets/Advanced/Boids/Scripts/BoidSchool.cs
index 4902fc165..c68c3eefb 100644
--- a/EntityComponentSystemSamples/ECSSamples/Assets/Advanced/Boids/Scripts/BoidSchool.cs
+++ b/EntityComponentSystemSamples/ECSSamples/Assets/Advanced/Boids/Scripts/BoidSchool.cs
@@ -61,11 +61,13 @@ protected override void OnUpdate()
                     Center = boidSchoolLocalToWorld.Position,
                     Radius = boidSchool.InitialRadius
                 };
+                
+                //这个参数不是很明白
                 Dependency = setBoidLocalToWorldJob.Schedule(boidSchool.Count, 64, Dependency);
                 Dependency = boidEntities.Dispose(Dependency);
 
                 EntityManager.DestroyEntity(entity);
-            }).Run();
+            }).Run(); //主线程执行 不會效率低吗
         }
     }
 }
diff --git a/EntityComponentSystemSamples/ECSSamples/Assets/Advanced/Boids/Scripts/BoidSchoolAuthoring.cs b/EntityComponentSystemSamples/ECSSamples/Assets/Advanced/Boids/Scripts/BoidSchoolAuthoring.cs
index cf3547d8b..892911c85 100644
--- a/EntityComponentSystemSamples/ECSSamples/Assets/Advanced/Boids/Scripts/BoidSchoolAuthoring.cs
+++ b/EntityComponentSystemSamples/ECSSamples/Assets/Advanced/Boids/Scripts/BoidSchoolAuthoring.cs
@@ -22,6 +22,7 @@ public void DeclareReferencedPrefabs(List<GameObject> referencedPrefabs)
 
         public void Convert(Entity entity, EntityManager dstManager, GameObjectConversionSystem conversionSystem)
         {
+            //给鱼群的Entity加上BoidSchool组件
             dstManager.AddComponentData(entity, new BoidSchool
             {
                 Prefab = conversionSystem.GetPrimaryEntity(Prefab),
diff --git a/EntityComponentSystemSamples/ECSSamples/Assets/HelloCube/2. IJobEntityBatch/RotationSpeedSystem_IJobEntityBatch.cs b/EntityComponentSystemSamples/ECSSamples/Assets/HelloCube/2. IJobEntityBatch/RotationSpeedSystem_IJobEntityBatch.cs
index 3fe562574..a96f76ae8 100644
--- a/EntityComponentSystemSamples/ECSSamples/Assets/HelloCube/2. IJobEntityBatch/RotationSpeedSystem_IJobEntityBatch.cs	
+++ b/EntityComponentSystemSamples/ECSSamples/Assets/HelloCube/2. IJobEntityBatch/RotationSpeedSystem_IJobEntityBatch.cs	
@@ -8,6 +8,7 @@
 // This system updates all entities in the scene with both a RotationSpeed_IJobChunk and Rotation component.
 
 // ReSharper disable once InconsistentNaming
+//[DisableAutoCreation] 禁止自动创建
 public partial class RotationSpeedSystem_IJobChunk : SystemBase
 {
     EntityQuery m_Query;
@@ -42,7 +43,14 @@ public void Execute(ArchetypeChunk batchInChunk, int batchIndex)
                     Value = math.mul(math.normalize(rotation.Value),
                         quaternion.AxisAngle(math.up(), rotationSpeed.RadiansPerSecond * DeltaTime))
                 };
+
             }
+            
+            //其他写法
+//            var chunkRotations1
+//                = batchInChunk.GetChunkComponentData(RotationTypeHandle);
+//            batchInChunk.SetChunkComponentData(RotationTypeHandle,
+//                new Rotation() { Value = new quaternion(0,0,0,0) });
         }
     }
 
@@ -61,7 +69,8 @@ protected override void OnUpdate()
             RotationSpeedTypeHandle = rotationSpeedType,
             DeltaTime = Time.DeltaTime
         };
-
+        
+        //这种调度变体将每个匹配块作为单个批处理。每个块都可以并行执行, 效率很高
         Dependency = job.ScheduleParallel(m_Query, 1, Dependency);
     }
 }