the difficulty of language learning
...者提出并探讨过的五种语言学习观念,即外语学能(foreign language aptitude)、语言学习难度(the difficulty of language learning)、语言学习性质(the nature of language learning)、学习和交际策略(learning and communication strategies)和学习者动机(learn...
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the difficulty of language learning
语言学习的困难
以上为机器翻译结果，长、整句建议使用 人工翻译 。