一、announce 是指首次公开或正式宣布人们所关心的某件事，含有预告的意思，有“郑重其事”之意；
英文解释：
1.to officially tell people about something, especially about a plan or a decision宣布，宣告，公布
例句：At the end of their meeting, it was announced that an agreement had been reached. 会议最后宣布已达成一项协议。
2.to say something, especially something that other people will not like, in a loud and confident way 郑重地说，大声而肯定地说〔尤指别人不喜欢的事〕
例句：‘I’m not going to their party,’ Maggie announced. “我不会去参加他们的聚会。”玛吉郑重地说。
3.to give information to people using a loudspeaker or microphone , especially at an airport or railway station 广播通知〔尤指在机场或火车站〕
例句：We arrived just as they were announcing the arrival of Flight 207 from Minneapolis. 我们到的时候正在广播来自明尼阿波利斯的207次航班已经到达的消息。
二、declare 强调“明确地，公开地”宣告某事，如战争、和平或意见等，有“断言、声称”之意。
英文解释：
1.to state officially and publicly that a particular situation exists or that something is true 宣布，声明
例句：A state of emergency has been declared. 已宣布进入紧急状态。
2.to say publicly what you think or feel 声称，宣称
例句：‘It’s not fair,’ Jane declared. “这不公平。” 简宣称道。
三、常用短语
四、练习：用announce 或declare的正确形式填空。（评论回复答案）
"The result will be ( ) in a few days," she ( ).