"alert"を含むコロケーション

To warn the authorities about a danger or problem.

to issue a warning

An official warning that a terrorist attack is likely.

being quick to notice and understand things

A public notification system used to help find abducted children.

an official warning about dangerous levels of smog

A warning or notification that an intruder has been detected.

to remain watchful and ready without interruption

A warning of a danger or problem that is issued to the entire country.

to become watchful and attentive unexpectedly

A state of increased readiness and watchfulness.

to warn or inform the media about something