noun🔗Share居里 3.7×1010 decays per second, as a unit of radioactivity. Symbol Ci."The scientist measured the radioactivity of the soil sample and found it contained half a curie (0.5 Ci) of radium-226. "这位科学家测量了土壤样本的放射性,发现它含有半居里(0.5 Ci)的镭-226。physicschemistryenergyunitscienceChat with AIVocabulary GamePractice Reading