求翻译：此外，在汉语普通话及各地方言中没有同时含复韵母和单韵母的汉字，中国学生在学习有双元音和单元音的单词时往往会出现错误。是什么意思？

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In addition, in Mandarin Chinese and local dialects. does not at the same time, longer vowel and single vowel character, Chinese students with learning and cell tone diphthong word often result in an error.

Often in addition, simultaneously has not contained the duplicate final and the single final Chinese character in Chinese standard spoken Chinese and each place dialect, the Chinese student has the diphthong and the single vowel word when the study can appear the mistake.

In addition, in Mandarin and local dialect without at the same time with multiple vowels and vowel characters, Chinese students in double vowels and vowel word errors often occur.

正在翻译，请等待...