for variety; as an improvement on what usually happens

换个花样;对往常一贯情况的改变

We use this expression to introduce something different from what is normal.

我们用这个短语表达某事与平常不同

We usually go to Cyprus on holiday but this year we've decided to stay at home for a change.

我们通常去塞浦路斯度假，但今年我们决定换个花样，呆在家里。

So instead I suggested taking her out to dinner for a change.

于是我又提议，带她出去吃饭换换口味。