英语中有些元音在讲话时没有重读，结果成了相当不定型的中央元音了。

Some English vowel sounds which are not given weight in speech become reduced to a rather formless central vowel.

youdao

英语中有些元音在讲话时没有重读，结果成了相当不定型的中央元音了。

Some English vowel sounds which are not given weight in speech become reduced to a rather formless central vowel.

youdao