/ʃwɑ: ||; ʃwɑ/noun [C] (technical术语) a vowel sound in parts of words that are not emphasized(stressed), for example the ‘a’ in ‘about’ or the ‘e’ in ‘moment’; the symbol that represents this sound, /ə/ 非重读央元音，弱元音（如about中的a，moment中的e）；非重读央元音符号