书写单位；书写符号代表一个元音、辅音、音节、词或其它表达方式，并且不能进一步分解的书写符号 A written character that represents a vowel, consonant, syllable, word, or other expression and that cannot be further analyzed.
这个字的重音是在哪个音节上？ Which syllable does the stress of this word fall on?
photography一字的主重音在倒数第三个音节上。 The main stress in `photography' falls on the antepenultimate syllable.
today一字的重音在第二个音节上。 In the word `today' the accent is on the second syllable.
