部 (Pō͘),學術 (ha̍k-su̍t)上 (siōng)講 (kóng)走 (chó͘)chio̍k (jit。咀嚼; 應 (eng)。mastication),是 (sī)淡 (tām)喙 (chhùi)利 (lāi)切 (chhiat)磨 (bôa)食物 (chia̍h-mi̍h)的 (ê)動作 (tōng-chok),是消化 (siau-hòa)的偷 (thau)一 (chi̍t)段 (tōaⁿ)過程 (kòe-têng)。