天有不测风云人有旦夕祸福的英文：
[Literal Meaning]
heaven/have/not/predict/wind/cloud/man/have/morning/evening/catastrophe/blessing
A storm may arise from a clear sky, while human fortunes are as unpredictable as the weather.

[解释]
不测：料想不到。比喻有些灾祸的发生，事先是无法预料的。

[Explanation]
Something unexpected may happen any time.

[例子]
天有不测风云，人有旦夕祸福。你不要再为他的去世而难过了。

[Example]
Something unexpected may happen any time. You should not be so sad for his pass-away.