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1. The researchers developed a new typeof radioactive source shielding to protectthe lab from radiation exposure.
研究人员开发了一种新型的放射性源屏蔽，以保护实验室免受辐射暴露。
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2. The construction of this shielding system is crucial for protecting theworkers and the public from the harmful effectsof radioactive materials.
这个屏蔽系统的建设对于保护工人和公众免受放射性物质的危害至关重要。
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3. The shielding technology used inthis project has proven to be effective inpreventing the spread of radioactive contamination.
该项目中使用的屏蔽技术已被证明能有效防止放射性污染的传播。