一项来自芝加哥大学心理学教授 Susan Levine 的研究发现，只是简单的重复数数字没有帮助孩子真正理解数字的含义来得有效。
A new study by University of Chicago psychology professor Susan Levine finds that simply repeating the numbers isn't as good as helping kids understand what they mean.
老师说：很好，那么孩子的复数呢？
老师：答得好。那？‘孩子’的复数形式呢？
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