半开元音 (半開元音) bàn kāi yuányīn
          
              bàn kāi yuányīn 
              
              noun 
              an open-mid vowel; a mid-open vowel; low-mid vowel; mid-low vowel; half-open vowel 
              Domain: Linguistics 语言学
              
                , Subdomain: Phonetics 
              
              
                , Concept: Vowel 元音
              
              
              
                Notes: With the tongue positioned two-thirds of the way from an open vowel to a mid vowel