/i:/ and ;y/ are both high front vowels, but /i:/ is a bit lower and more forward than /1/In addition, /i:/ is tense in that the root of the tongue is more advanced than with /1/.which is lax () - 自考题库

/i:/ and ;y/ are both high front vowels, but /i:/ is a bit lower and more forward than /1/In addition, /i:/ is tense in that the root of the tongue is more advanced than with /1/.which is lax ()

出自：伊犁师范-英语语音

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