Prefab是一个编辑器工具，允许我们在UE4中将预先配置好的演员的集合作为预制资产存储在内容浏览器中，然后根据需要在Unrealengine中随时将预制件添加到相同或任何其他级别。
预制件可以直接在关卡编辑器中进行编辑，预制件的所有更改都可以传播到所有现有的预制件实例。
Prefab is an editor tool that allows us to store pre-configured actor collections as prefabricated assets in the content browser in UE4, and then add prefabs to the same or any other level at any time in Unrealengine as needed.
Preforms can be edited directly in the level editor, and all changes to the prefab can be propagated to all existing instances of the prefab.
