N-COUNT （德语等语言中加于元音之上的）变音符，曲音符号 An umlaut is a symbol that is written over vowels in German and some other languages to indicate the way in which they should be pronounced. For example, the word 'für' has an umlaut over the 'u'. （德语等语言中加于元音之上的）变音符，曲音符号