It means someone speaks or writes without considering his listeners or readers.

这意味着某人在说话或写作时不考虑其听众或读者。

youdao

In general speaking, the speaker or writer has over-estimated his listeners or readers.

一般说来，就是演说家或者作家高估了他的听众或者读者。

youdao

In general speaking, the speaker or writer has over-estimated his listeners or readers. In these cases, the idiom mocks the audience rather than the speaker.

一般来说，是说话人或作者高估了听众或读者，所以，这则成语嘲讽的主要是听众或观众，而不是说话者。

youdao

And for those American readers or listeners, and those Australian readers or listeners, I think we all understand at this point we've got an integrated world economy and what happens in Europe will have an impact on us.

WHITEHOUSE: President Obama��s News Conference with Prime Minister Gillard of Australia | The White House

Because unless it is live TV or radio, the readers, viewers or listeners never get to hear or see the questions.

FORBES: Stop Worrying About The Questions -Media Training

If, however, you successfully predict the questions you will be asked, but your answers are reactive, defensive, overly complex or muddled, you will not get any credit from the reporter, readers, viewers or listeners.

FORBES: Answering The Basic Questions -Media Training