拼音：yī yán jì chū，sì mǎ nán zhuī
注音：ㄧㄧㄢˊㄐㄧˋㄇㄚˇㄋㄢˊㄓㄨㄟ
解释：一句话说出了口，就是套上四匹马拉的车也难追上。指话说出口，就不能再收回，一定要算数。
出处：《论语·颜渊》：“夫子之说君子也，驷不及舌。” 《邓析子·转辞》：“一言而非，驷马不能追；一言而急，驷马不能及。”
英语：what has been said cannot be unsaid
In a word, it is difficult to catch up with a car pulled by four horses. When you say something, you can't take it back. You must count.
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