承諾的英文：
effort
acceptance
undertaking
promise to do sth.
promise to undertake
undertake to do sth.
acceptance of offer

effort是什么意思：
n. 努力，尝试；成就；杰作
  • It was a vain effort.
    这种努力是徒劳无益的。
  • That effort will be bootless.
    那种努力将是无益的。
  • You must not relax your efforts.
    你不可以松懈你的努力。
acceptance是什么意思：
n. 接受；赞同；承认；相信；承兑
  • ineligible acceptance
    不合格的银行承兑汇票
  • accept [take up] a challenge
    接受挑战,应战
  • accommodate by accepting time
    通融接受远期信用证
undertaking是什么意思：
n. 事业，企业；保证
v. undertake的现在分词
  • to bear; to shoulder; to undertake; to assume
    担负
  • A chivalrous or adventurous undertaking.
    大胆的或冒险的经历
  • Their installation proved a laborious undertaking.
    要来安顿这些人，确实是一件麻烦的事情。

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