Sī-sîn-keng

Wikipedia (chū-iû ê pek-kho-choân-su) beh kā lí kóng...
Sī-sîn-keng

Sī-sîn-keng (視神經; optic nerve) sī tē-2 tùi náu-sîn-keng, hām sī-kak ū-koan.