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What are they ?
They are public signs.
public signs
There are a lot of public signs used in public places.
What is this sign?
What does it mean?
Where is it usually seen?
No smoking
It warns us not to smoke here.
It is usually seen in many public places, such as schools, hospitals and cinemas.
What is this sign?
What does it mean?
Where is it usually seen?
No swimming
It warns us not to swim here.
It can keep us safe from danger.
It is usually seen near the lake.
talk about the signs
A: What is this sign?
B:
A: What does it mean?
B:
A: Where is it usually seen?
B:
It means “No talking”.
It means “No parking”.
It means “No littering”.
It means “No photos”.
Public signs
explain things