The police are on notice to have more security at the concert. [=the police have been warned to have more security at the concert]警方被告知要加强音乐会的安保工作。

She put us on notice [=she told us in a very definite and forceful way] that she would not be available for interviews until after the trial.她非常确定地告知我们，审判前她不会接受采访。