abacus [ˈæbəkəs]

例句:

• One tool to do that is the Japanese abacus.
  来自SA
• They also learned to use the abacus.
  他们还学习珠算。
  来自《权威词典》
• Calculation was done on various forms of the abacus.
  来自M. Kline
• She learned to calculate using an abacus, he says.
  来自VOA
• Except for the sharp clicking of Chueh - hsin's abacus counters, all was still.
  房里只有算盘珠子的接连的 、 清脆的响声.
  
• The abacus is the ancestor of the modern computer.
  算盘是现代电脑的原型.