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1. The scientistused a radioactive substance to study theproperties of matter.
这位科学家使用放射性物质来研究物质的性质。
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2. Radiation from the suncan cause skin cancer.
太阳的辐射可能导致皮肤癌。
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3. The power plant is equipped with radiationshielding to protect workers.
发电厂配备了辐射防护设施,以保护工人。