•The prisoner had been kept in isolation for three days.这个犯人已被隔离三天了。

•After all the visitors had left, she experienced a feeling of complete isolation.所有的客人离开后，她有一种异常孤独的感觉。

•I can't think about it in isolation (= separately) - I need some examples of the problem.我无法孤立地考虑这个问题——我需要一些例子。