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decontamination

noun
🔊/ˌdiːkənˌtæmɪˈneɪʃn/
🔊/ˌdiːkənˌtæmɪˈneɪʃn/
[uncountable]
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  1. the process of removing harmful substances from a place or thing清除有害物质；排除…的污染
    • the decontamination of water supplies供水去污