越南语音调 6 tones in Vietnamese - Thanh Điệu 英语讲解

[视频作者] 绿绿阿卡阿卡

[视频时长] 10:42

[视频类型] 野生技能协会

https://www.youtube.com/watch?v=dU92A89c11E Vietnamese (Tiếng Việt) has six tones, although only five are used in the South..