拼音：dà n x hu ò fú
解释：旦夕：早晨和晚上，比喻短时间内。形容灾祸或幸福是没有定数的。常与“天有不测风云”连用。
单字解释： 旦 夕 祸 福
Dan Xi: morning and evening, a metaphor for a short time. There is no definite number to describe disaster or happiness. It is often used in conjunction with "unexpected weather".
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