The drag-and-drop operation is relatively simple, but it does involve several interacting processes for tracking the user's input and providing immediate feedback throughout the process.
拖放操作相对简单，但它涉及了几个交互过程，用来跟踪整个过程的用户输入和提供即时反馈。
One of the major benefits of this is that your users can provide early feedback on what they like and don't like, thereby providing essential input into further development.
这样做最大的好处就在于，你的用户能够尽早地给你反馈，告诉你他们喜欢什么，不喜欢什么，这样你才能进行改进。
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