what can we use to calculate thing in 20thorin 21st century

用戶228306

2008-07-16 3:25 am

what can we use to calculate thing in 20th or in 21st century

回答 (1)

Man Ho

2008-07-17 7:49 pm

✔ 最佳答案

mind, finger, calculator, computer, 算盤

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