6.1 Closing Diphthongs: /e&618;/， /a&618;/， /&596;&618;/， /&601;&650;/， /a&650;/
基础科学

6.1 Closing Diphthongs: /e&618;/， /a&618;/， /&596;&618;/， /&601;&650;/， /a&650;/图片（共6张） :

        The closing diphthongs have the characteristics that they all end with a glidetoward a closer vowel. Because the second part of the diphthong is weak,they oftendo not reach a position that could be called close. The important thing is that a glidefrom a r......（本文共 17515 字, 6 张图）     [阅读本文] >>