Press rollers and telephone: what they have in common

  1. Step 1. Press rollers — is part of — Paper machine. Rollers squeeze out the water.
  2. Step 2. Paper machine — is used in — Paper. Industrial production.
  3. Step 3. Paper — is material for — Loudspeaker. The cone is paper.
  4. Step 4. Loudspeaker — is part of — Telephone. The earpiece reproduces the other person’s voice.

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