Kau-su ( Yin-ngi : Professor) he yit-chung ko-ten kau-yuk thi-ne chung ke ch?t-chh??n. Kau-su ke kung-chok he chhai thai-ho?k ch??m-tui shen-chong ke liang-vet khoi-kho fe?t-cha ho?k-sang chon-ngia?p hiun-lien, piau-sut kho-ho?k lau vun-ho?k ten liang-vet.