珠算，即“中国的算盘”，在计算器被发明之前一直是主要的计算工具。

The Zhusuan, or China's abacus, was doing the math long before the electronic calculator was invented.

youdao

珠算，即“中国的算盘”，在计算器被发明之前一直是主要的计算工具。

The Zhusuan, or China's abacus, was doing the math long before the electronic calculator was invented.

youdao