| sceneBuildIndex | Index of the scene in the Build Settings to unload. |
| sceneName | Name or path of the scene to unload. |
| scene | 要卸载的场景。 |
bool Returns true if the scene is unloaded.
Destroys all GameObjects associated with the given scene and removes the scene from the SceneManager.
注意：不建议使用此函数，可以改用 UnloadSceneAsync。
警告：无法在不同的物理和可见性回调（如 OnTriggerEnter 或 OnBecameVisible）过程中调用此函数，因此不建议使用。
The given scene name can either be the full scene path, the path shown in the Build Settings window or just the scene name. If only the scene name is given this will load the first scene in the list that matches. If you have multiple scenes with same name but different paths, you should use the full scene path.
Examples of supported formats:
"Assets/Scenes/Scene1.unity"
"Scenes/Scene1"
"Scene1"
Note: sceneName is case insensitive.
Note: Assets are currently not unloaded, in order to free up asset memory call Resources.UnloadAllUnusedAssets.