他收到了第二次面试的回电通知。

He received a ___call-back for the second interview.

医生办公室说他们会在下午给我回电。

The doctor's office said they would give me a ___call-back in the afternoon.

演讲者巧妙地使用了回调，让观众想起了他之前讲的笑话。

The speaker cleverly used a ___call-back to remind the audience of his earlier joke.

这个API需要一个回调函数来处理异步操作的结果。

This API requires a ___callback function to handle the result of asynchronous operations.