"晴转多云"用英语可以翻译为"partly cloudy." 这个短语的来源可能是来自天气预报，在这种情况下，"晴转多云"意味着原本是晴天的天气可能会变为多云。 下面是一些英文例句和它们的中文翻译：

The weather forecast says it will be partly cloudy tomorrow.

天气预报说明天会是晴转多云。

It's partly cloudy today, so we can still go for a hike.

今天是晴转多云，所以我们仍然可以去远足。

I'm glad it's only partly cloudy because I don't like it when it's completely overcast.

我很高兴今天只是晴转多云，因为我不喜欢完全阴天的天气。