儿童掌握数字词汇的概念需要付出很大的努力。
It takes great efforts for children to grasp the concept of number words.
孩子们被灌输数字词汇之前，只能大概辨别3以上的数目。
Prior to being spoon-fed number words, children can only approximately discriminate quantities beyond three.
该项研究是以澳大利亚土著居民为对象，他们拥有非常有限的数字词汇。
The study looked at Australian indigenous populations, who have very restricted vocabularies for numbers.
我们同时也质疑关于最近关于亚马逊文化（这些文化有非常有限的数字词汇）的一些研究结果的解释。
We also question the interpretation of recent findings from Amazonian cultures that have very restricted number vocabularies.
我们同时也质疑关于最近关于亚马逊文化（这些文化有非常有限的数字词汇）的一些研究结果的解释。
We also question the interpretation of recent findings from Amazonian cultures that have very restricted number vocabularies.
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