芳 ㄈㄤ fāng 香 ㄒㄧㄤ xiāng 烃 ㄊㄧㄥ tīng 芳 ㄈㄤ fāng 香 ㄒㄧㄤ xiāng 烴 ㄊㄧㄥ tīng aromatic hydrocarbon (i.e. involving benzene ring)