Unity的Timeline功能可以用DeleteTrack方法删除Timeline里面的Trackhttps://docs.unity.cn/Packages/com.unity.timeline@1.0/api/UnityEngine.Timeline.TimelineAsset.html#UnityEngine_Timeline_TimelineAsset_CreateTrack__1_UnityEngine_Timeline_TrackAsset_System_String_ 用完这个方法后，在UI里面打开…