+13 = 15 

ㄍㄨㄧ˪kuì

  1. 鐵釘Iㄏㆦ˫hōoㄊㄧㄉㄧㄥˋthih‑ting‑áㄍㄨㄧ˪ㄉㄧㄜㆷ̇kuì‑‑tio̍h鐵釘