You should of course have at least 2 pencils and 6 pens. 2 black, 2 blue, 2 red.

当然你得准备至少两支铅笔和6支钢笔。2支黑色，2支蓝色，2支红色。

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Psychologists have since demonstrated that young children, asked to count the pencils in a pile, readily report the number of blue or red pencils, but must be coaxed into finding the total.

心理学家们而后又展示一个例子，即：让孩子们数一堆铅笔时，他们能顺利地报出蓝铅笔或红铅笔的数目，但却需诱导才能报出总的数目。 此类研究表明：数学基础是经过逐渐努力后掌握的。

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Psychologists have since demonstrated that young children, asked to count the pencils in a pile, readily report the number of blue or red pencils, but must be coaxed into finding the total.

心理学家们而后又展示一个例子，即：让孩子们数一堆铅笔时，他们能顺利地报出蓝铅笔或红铅笔的数目，但却需诱导才能报出总的数目。 此类研究表明：数学基础是经过逐渐努力后掌握的。

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