Hourglass. Grains of sand fall from the upper to the lower glass bulb, measuring a fixed length of time. Hour glasses were first used by the Romans in about 1 BC.
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Details
Creative#:
TOP10190222
Source:
達志影像
Authorization Type:
RM
Release Information:
須由TPG 完整授權
Model Release:
N/A
Property Release:
N/A
Right to Privacy:
No
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