abacus [ˈæbəkəs]
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基本释义
n.算盘
英英释义
a square or rectangular frame holding an arrangement of small balls on metal rods or wires , which is used for counting , adding , and subtracting
参考例句
They also learned to use the abacus. 他们还学习珠算。
The abacus is the ancestor of the modern computer. 算盘是现代电脑的原型。
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