Signs around us

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Across
  1. 1. walk a long way, as for pleasure or physical exercise
  2. 3. the state of being silent
  3. 7. telling us how and where to go
  4. 8. telling us things we may want to know
Down
  1. 2. telling us how to do something
  2. 4. a group of people living together in a camp
  3. 5. telling us things we must not do
  4. 6. a public display of a message；symbol