canary in a coal mine

Something or someone who, due to sensitivity to his, her, or its surroundings, acts as an indicator and early warning of possible adverse conditions or danger. Refers to the former practice of taking caged canaries into coal mines. The birds would die if methane gas became present and thereby alert miners to the danger. Wildlife in disaster movies assumes the role of the canary in a coal mine, fleeing the scene when catastrophe is imminent. Unaware that he had been given the test drug, John was used as a canary in a coal mine to see its effects on the human mind.See also: canary, coal, mine

单词	canary in a coal mine
释义	canary in a coal mine canary in a coal mine Something or someone who, due to sensitivity to his, her, or its surroundings, acts as an indicator and early warning of possible adverse conditions or danger. Refers to the former practice of taking caged canaries into coal mines. The birds would die if methane gas became present and thereby alert miners to the danger. Wildlife in disaster movies assumes the role of the canary in a coal mine, fleeing the scene when catastrophe is imminent. Unaware that he had been given the test drug, John was used as a canary in a coal mine to see its effects on the human mind.See also: canary, coal, mine
随便看	series submerged arc welding series t junction series transistor regulator series-tuned circuit series turns series ventilation series welding series winding series, world series-wound series-wound generator series wound motor series-wound motor serif seriffed serif font serifs serif typeface serigraph serigrapher serigraphers serigraphic serigraphs serigraphy serin