undertake /ˌʌndəˈteik/ vt. (undertook /ˌʌndəˈtuk/, undertaken /ˌʌndəˈteikən/) 1.从事,着手,承担(跟名词或不定式)undertake a journey (task)去旅行(从事一项工作);undertake responsibility 承担责任;undertake to pay off one’s son’s debts 负责还清儿子的债务 2.同意,答应(跟不定式)undertake to finish the job by Friday 同意星期五之前完成这份工作3.保证(跟从句)The sponsors undertake that the proposal meets all the legal requirements. 发起者们保证这个建议符合所有的法律要求。