承诺的英文怎么说和参考例句

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承诺的英文：
effort
acceptance
undertaking
promise to do sth.
promise to undertake
undertake to do sth.
acceptance of offer

参考例句：
Pledge a donation(to a charity).
承诺（向慈善机构）捐献。He would not commit himself in any way.
他不愿作任何承诺。She signified her consent with a smile.
她以微笑表示了她的承诺。The best promise that "Vitamin" makes to you is to keep you fit all the time.
包君健康，这是“维生素”对您的最好承诺。[C](fml)formal promise or guarantee,esp in writing
正式的承诺或保证(尤指书面形式)Some fresh-men complain about his penchant for making commitments easily and then he may abandon it with little notice.
一些新议员抱怨他总爱作出承诺，然后又在人们不知不觉中放弃了。Betroth:To promise to give in marriage.
订婚:对结婚的承诺。It was a virtual promise.
那是实质上的承诺。Realized commitment is real eudaemonia!
兑现的承诺才是幸福！An alluring smile,prospect,promise
迷人的微笑,前景,承诺.

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。