1. （基督教中的）天使报喜（天使长加百列奉告圣母马利亚她将诞下圣子耶稣）
In Christianity, the Annunciation was the announcement by the Archangel Gabriel to the Virgin Mary that she was going to give birth to the son of God.

1. a formal public statement

e.g. the government made an announcement about changes in the drug war
a declaration of independence

Synonym: announcementproclamationdeclaration