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IELTS BNC: 6702 COCA: 22759
sulphurnoun [ U ]mainly UK US usually sulfur uk/ˈsʌl.fər/ us/ˈsʌl.fɚ/ symbol S

a pale yellow chemical element that exists in various physical forms. It burns with a blue flame and a strong smell and is used in medicine and industry.硫,硫磺


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