diphthong
noun [ C ] phonetics specialized uk/ˈdɪf.θɒŋ/ /ˈdɪp.θɒŋ/ us/ˈdɪf.θɑːŋ/ /ˈdɪp.θɑːŋ/
双元音
a vowel sound in which the tongue changes position to produce the sound of two vowels
Compare: monophthongtriphthong
英汉双解词典收录81607条英汉双解翻译词条，基本涵盖了全部常用单词的读音、翻译及用法，是英语学习的有利工具。