单词	Porton Down
释义	Porton DownPor‧ton Down /ˌpɔːtn ˈdaʊn $ ˌpɔːr-/ a place in the south of England where there is a government laboratory used for studying chemical weapons and biological weapons (=weapons that use bacteria to kill people by giving them diseases)
随便看	trade secret trade show tradesman tradespeople Trades Union Congress trade surplus trade union trade unionism trade unionist trade wind trading trading estate trading partner trading post tradition traditional traditionalism traditionalist traditionally traduce Trafalgar, Cape Trafalgar Square Trafalgar, the Battle of traffic traffic calming

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