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An abacus, which is a calculating tool often constructed as a wooden frame with beads sliding on wires. It was in use centuries before the adoption of the written Hindu-Arabic numeral system and is still widely used by merchants and clerks in China, Japan, Africa and elsewhere.
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Creative#:
TOP22288072
Source:
達志影像
Authorization Type:
RM
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須由TPG 完整授權
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N/A
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No
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