Receptive vocabulary size, productive vocabulary size, and depth of vocabulary knowledge correlated with each other significantly at the four different learning stages.

接受性词汇量、产出性词汇量与词汇深度知识在四个学习阶段均有不同程度的显著相关。

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These stages describe a path from learning to mastery.

这些阶段描绘了从学习到掌握的途径。

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It may however have a value, as a way of recycling the new language, particularly in the early stages of learning it.

不过这类问题也有存在的价值，可以作为巩固新知的一种方式，特别是在学习新知的早期阶段。

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And Piaget argued that these two mechanisms of learning drove the child through different stages.

皮亚杰认为,这两种学习机制,帮助儿童跨越各个阶段

耶鲁公开课 - 心理学导论课程节选

In order to maintain their employability, people will need to keep learning at different stages through their lives.

BBC: Student, 107, is still learning

The findings are helping to shed light on the earliest stages of learning.

WSJ: Wise Beyond Their Years: What Babies Really Know

Second, the initial stages of learning a skill invariably involve tedium.

FORBES: Why Apprenticeships Are the Fastest Way to Acquire Skills