学会用算盘。
The zoo also has performances featuring other animals trained to do tricks, including a monkey that slam dunks basketballs and dogs trained to use an abacus.
这家动物园也在训练其他动物表演，比如训练猴子灌篮，训练狗狗打算盘。
Such fine calibrations may date back to the use of the abacus, and to an old Chinese convention that assumes a 360-day year for the purpose of reckoning interest payments.
如此精细的调整可追溯到算盘的使用，追溯到中国的一个古老传统，即假设一年为360天，以达到简化利息支付的目的。
Such fine calibrations may date back to the use of the abacus, and to an old Chinese convention that assumes a 360-day year for the purpose of reckoning interest payments.
如此精细的调整可追溯到算盘的使用，追溯到中国的一个古老传统，即假设一年为360天，以达到简化利息支付的目的。
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