有约在先yǒu yuē zài xiān一般成语 基本例句 I fear that a prior engagement will prohibit me from joining you in dinner.已经约定好了。指事情的处理方案已事先定好。繁体有約在先抱歉,这支舞我有约在先了。 Sorry, I am engaged for the social dance. iciba 对不起,我有约在先了。 Sorry, I'm engaged. iciba 是的是的。我们有约在先。我马上去做。 All right. We agreed. I'll do it in a minute. xdf