基本解释n.成疤(表麪処治侷部露骨)同根派生 英汉例句Stop picking at that scab.別再去摸傷口上的痂。A dry scab or slough formed on the skin as a result of a burn or by the action of a corrosive or caustic substance.焦痂由燒傷或通過腐蝕或侵蝕物質作用而導致皮膚形成的乾疤或死肉