有时候同时具有这两种接口，并将UI、代码和业务逻辑分离开了。

Sometimes they have both and separate the UI, code from the business logic.

youdao

跨越、进入或离开源代码

Step over, into, or out of, source code

youdao

跨越、进入或离开源代码

Step over, into, or out of, source code

youdao