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：焦痂由烧伤或通过腐蚀或侵蚀物质作用而导致皮肤形成的干疤或死肉
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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