A notice was posted in a park: Leave nothing behind but your footprints, and take nothing away except your memories.

1. Remind and tell visitors not to trample on lawns and green spaces, break flowers or litter when playing in the park.

2. This notice is very good. Because it uses euphemistic and implicit language to advise tourists that they can only leave footprints and take away beautiful memories in the park. This kind of language not only appears gentle and friendly, but also makes tourists feel at ease and do what they are asked to do. It can be said that it kills two birds with one stone.

Answer

Knowledge expansion

Slogans about caring for the environment:

1. Human beings cannot live without flowers and grass, just like babies cannot live without flowers. Open mother's arms.

2. If you plant more trees, there will be more green in the world.

3. Green mountains clear my eyes and flowing water calms my ears.