Chinese college students 'low spoken English proficiency has become a major problem puzzling many English teachers and researchers.

中国大学生的英语口语水平低下，已成为困扰众多英语教学者和英语研究者的一大难题。

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In the last few years, incidental vocabulary learning (IVL) has become an increasingly interesting topic of discussion for researchers, teachers involved in second language vocabulary acquisition.

近年来，在二语词汇习得领域，词汇的附带习得引起了广大研究者越来越多的兴趣。

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