- 古: antiquity; ancientry
- 杜: birch-leaf pear a surname
- 比: 2
- 古杜: goudoux; kudu
- 杜比: (quincy douby); b/c type dolby system; dob dolby; dobi; dolby digital; dolby hx pro dolby hx pro headroom extension system; dolby-a;b;c;d; doubby; dubbi; dubie; duby; touby
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