Cindy教口语，“空话”英语怎么说？

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A pie in the sky
 

a pie in the sky

不能保证实现的诺言，空中楼阁;空话
 

This phrase refers to the imaginary things, unrealistic ideas, or empty and unpractical words.

这个短语指的是虚构的事物、不现实的想法、或是空洞不切实际的话。
 

His dream of being a famous scientist seems like a pie in the sky.

他想成为一名著名的科学家，这似乎希望渺茫。
 

Sometimes I have the feeling that my dream is just a pie in the sky.

有时我会觉得自己的梦想其实只是空中楼阁。