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1
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astronomical clock
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United States
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Astronomical clocks are less known and not commonly associated with cultural traditions, with limited public awareness or interest in their presence.
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1
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2
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atomic clock
|
United States
|
Used for scientific and official timekeeping purposes
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1
|
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3
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atomic clock
|
United States
|
Used for precise timekeeping in scientific research, telecommunications, and navigation systems
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1
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4
|
clock
|
US
|
Seen as an essential timekeeping device in homes and offices, often used as decorative items as well.
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1
|
|
5
|
clock
|
United States
|
Common household item used to keep track of time and schedule daily activities.
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1
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