perceptions是什么意思？

There are a lot of existing perceptions about British food and so we can't alter these too much.

These days, children are robbed of these ancient freedoms, due to problems like crime, traffic, the loss of the open spaces and odd new perceptions about what is best for children, that is to say, things that can be bought, rather than things that can be found.

People have quite different perceptions of nature

This leads to healthier behaviors and perceptions of other people.