A study by Berninger found that in grades two, four, and six, children wrote more words, faster, and expressed more ideas when writing essays by hand than when typing on a keyboard.

贝尔宁格的研究发现，二年级、四年级以及六年级的孩子，与打字相比，他们手写的单词量更大，速度更快，并能表达更复杂的思想。

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In other words, having learned that two was more than one and three more than two, they could also figure out that five was more than two, or eight more than six.

也就是说，学会了两个比一个多，三个比两个多后，它们能够推理出五个比两个多，或八个比六个多。

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