英文：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.
中文：焦痂由燒傷或通過腐蝕或侵蝕物質作用而導緻皮膚形成的幹疤或死肉
英文：An agent or instrument used to destroy abnormal tissue by burning, searing, or scarring, including caustic substances, electric currents, lasers, and very hot or very cold instruments.
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