结论珠心算训练对儿童的认知能力有一定影响。
Conclusion the abacus mental calculation training could progress the children's basis cognitive ability.
如果他什么也不知道，他怎么可能对珠心算有兴趣呢？
What if he did not know how he might be interested in it abacus?
如果他什么也不知道，他怎么可能对珠心算有兴趣呢？
What if he did not know how he might be interested in it abacus?
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