| 摘要 |
PURPOSE: A clock in which a second hand is reversely designed is provided to supply a user the feeling that time goes back. CONSTITUTION: A clock in which a sec hand comprises a saw-toothed wheel, a second hand, a minute hand, and an hour hand. The saw-toothed wheel comprises an outside saw tooth and an inside saw tooth. The teeth number of the saw-toothed wheel is sixty. The second hand is attached to the front part of outside saw tooth. The second hand reversely rotates.
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