They also learned to use the abacus.他們還學習珠算。Except for the sharp clicking of Chueh - hsin's abacus counters, all was still.房里只有算盤珠子的接連的 、 清脆的響聲.operate an abacus打算盤use an abacus打算盤She can reckon rapidly on the abacu...
Except for the sharp clicking of Chueh - hsin's abacus counters, all was still.房里只有算盤珠子的接連的 、 清脆的響聲.The abacus is the ancestor of the modern computer.算盤是現代電腦的原型.She can reckon rapidly on the abacus.她用算盤算得很快....