This is the 146th most frequent Chinese word.
宣布
"Announce" or "declare."
In this case, '宣布' indicates the dissemination of information via a communication channel.
这个消息通过媒体被宣布给大众。
The news was announced to the public through the media.
Here, '宣布' is utilized in a context where someone formally reveals information to a group or audience.
他在会议上宣布了公司的新计划。
He announced the company's new plan during the meeting.
In this sentence, '宣布' is used to convey the meaning of formally making a statement for public knowledge.