这两个音怎么发？

How to make the sounds

To make the /i/ sound, raise the middle of your tongue high in your mouth and tense your muscles into a smile. Make a voiced sound. For /I/, relax your muscles but keep your tongue in the same position.

发/i/的音时，抬起舌头的中间部分，让口腔肌肉变得紧张，做出微笑的样子，然后发声。而放松肌肉仍然让舌头保持在同样的位置上发出的音就是/I/

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