declare: implies explicitness and usually formality in making known: the referee ~d the contest a draw.       draw平局      


announce: implies a declaration, especially for the first time, of something that is of interest or is intended to satisfy curiosity: ~d their engagement at a party.   


publish: implies making public, especially through print: ~ed the list of winners in the paper.


proclaim: implies a clear, forceful, authoritative oral declaring: the president ~ed a national day of mourning.      如emancipation proclamation解放黑人奴隶宣言        proclaim通常表示oral口头宣布，但也有不少表示书面宣布的例句，因此译文中没有强调口头oral


promulgate: implies the proclaiming of a dogma, doctrine, or law: ~d an edict of religious tolerance.         (doctrine和dogma都表示教条，后者表示僵化教条the dogma that the king can do no wrong认为国王永远正确的教条)       (edict法令，如in 1741 Catherine the Great issued an edict of toleration for Buddhism1741年叶卡捷琳娜大帝颁布法令允许佛教存在)


advertise: applies to calling public attention to something by widely circulated statements, often marked by extravagance or a lack of restraint: ~d a new model of vacuum cleaner.        advertisement常缩写成ad


declare宣布: 明确正式的告知(an explicit,formal making known)，announce也是宣布:  常表首次，引人兴趣好奇，publish出版:  表示通过印刷公开，proclaim宣布宣言:  指权威有力清晰的口头宣布(clear, forceful, authoritative, oral)，promulgate颁布发布: 指宣布教导教条法律，advertise广告: 指广泛发布、吸引公众注意某物(statement正式声明)，常有夸张(extravagance, lack of restraint夸张缺乏克制)


记忆方法: 1) 首字母排序为3P2A1D即PAD平板电脑<==用它宣布某事

               2) 宣布的意思是公开告知mean to make known publicly.首字母排序为3P2A1D即PAD平板电脑<==用它宣布某事