In articulating a Monophthong, the vowel-sound doesn't change in quality throughout the course of a syllable.
发单
，在
个
发过程中不改变质。
In articulating a Monophthong, the vowel-sound doesn't change in quality throughout the course of a syllable.
发单，在个发过程中不改变质。
In articulating a Monophthong, the vowel-sound doesn't change in quality throughout the course of a syllable. The other vowels in English are relatively Monophthongs.
发单，在个发过程中不改变质。英语中其他均为单。例如：
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