They may have used pebbles to calculate, for the word " calculus " means " pebble ".
他们也许是用石子来作计算的, 因“calculus ” 这个字原意是 “ 石子 ”.
辞典例句
This value is close enough and easier to calculate for range work.
这个接近值对于计算比较容易对于距离计算已经足够了.
互联网
He shall also calculate for export price, normal price, and price regulation when the appeal occurs.
做好企业申诉时出口价格 、 正常价值 、 价格的调整、数据计算等工作.
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