n.二合双元音化，复元音化...

diphthongization的音标：diphthongization的英式发音音标为：[ˌdɪfθɒŋaɪ'zeɪʃn]diphthongization的美式发音音标为：[ˌdɪfθɒŋaɪ'zeɪʃn]...