She knew how to work on the abacus.
她会打算盘。
They also learned to use the abacus.
他们还学习珠算。
The oldest kind of computer was the abacus.
最古老的计算机就是算盘。
We might say, the day of the abacus is gone.
我们可以说，算盘的时代已经过去了。
The abacus was invented in the sixth century.
算盘发明于六世纪。
Why is the abacus such an effective teaching device?
为什么算盘有效地帮助了教学？
If time allows, the class will also cover multiplication on the abacus.
如果时间允许，我们也会学一些乘法的运算。
I spend a bit of the stomach throws ring for a small abacus Bola: themselves?
我愣了一下，肚子里的小算盘拨拉得劈啪响：自己用？包工程？
I spend a bit of the stomach throws ring for a small abacus Bola: themselves?
我愣了一下，肚子里的小算盘拨拉得劈啪响：自己用？包工程？
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