I don't know if he still lives there. We've been out of touch for some time.我不知道他是否还住在那儿，我们有段时间不联系了。

I've been away from the business for several years and feel quite out of touch.我远离生意场几年了，觉得相当生疏。

He is out of touch with the younger generation.他不了解年轻的一代。