vt.承担，从事；保证；同意，答应；承诺 变形： 过去式：undertook过去分词：undertaken现在分词：undertaking第三人称单数：undertakes 双语释义：v.(动词)vt. 担任,承揽 make oneself responsible forvt. 着手,开始 start (a piece of work)英英释义： undertake[ ,ʌndə'teik ]v.enter upon an activity or enterprise同义词：set aboutattemp