Once you make a promise, you should keep it.
一旦做出承诺,就要遵守诺言。
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今天的几个句子是有关诺言的：1. He did not live up to his promise. 他没有实践他的诺言。2. He acted counter to his promise.他的行动与他的诺言相反。3. He was oblivious of his promise.他忘记了他的诺言。
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