• 2022-05-31
    中国大学MOOC: The long vowels and short vowels, such as/i:/ and /ɪ/, /ɜː/ and /ə/, /u:/ and /ʊ/, /ɔ:/ and /ɒ/ , are quite similar. The only difference between the long vowel and the short vowel is that one is pronounced longer and the other is pronounced shor