1. aid n.&vt.帮助;援助;资助; first aid 急救 拓展: aid sb. to do sth.帮助某人做某事; with the aid of…在…的帮助下; in aid of… 为帮助… be an aid to\for…对…有帮助 do\give\offer first aid进行急救 eg: A dictionary is an aid for learning a new language. 字典对学一门新语言有帮助.