announce /əˈnaʊns/ v. 宣布,宣告(决定、计划等):

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例句/词组:

They haven't formally announced their engagement yet.

他们还没有正式宣布订婚。

英语解释：

~ (sth) (to sb) to tell people sth officially, especially about a decision, plans, etc. 宣布,宣告(决定、计划等):