To proclaim or make known, formally or in a public manner; publish.

正式宣告；宣布；发表。

To serve as an announcer of.

作为(节目、比赛等的)播报员或广播员。

To state formally the presence or approach of.

通报(客人莅临)。

To act as an announcer.

作为(节目、比赛等的)播报员(或广播员)。

To declare one's candidacy, give one's political support.

宣布参加竞选；(在竞选中)宣布支持某人。