noun, verb · to indicate the pronunciation of Chinese characters using phonetic symbols such as Pinyin or Bopomofo, or the symbols themselves

这本幼儿读物在每个汉字上方都标注了注音。

verb · the specific Chinese phonetic system known as Zhuyin Fuhao, commonly used in Taiwan

台湾的字典通常采用注音符号来排列汉字。