1 to make sth known publicly and officially 宣布;公布;发布:
They announced that our train had been delayed.他们宣布我们的火车误点了。The winners will be announced in next week's paper.优胜者的名单将在下星期的报纸上公布。
2 to say sth in a firm or serious way 坚决地说;认真地说:
She stormed into my office and announced that she was leaving.她冲进我的办公室,声称她辞职不干了。