noun 下载 🔗分享 居里,Ci 3.7×1010 decays per second, as a unit of radioactivity. Symbol Ci. Examples : "The scientist measured the radioactivity of the soil sample and found it contained 2 curies of cesium-137. " 那位科学家测量了土壤样本的放射性,发现它含有2居里(Ci)的铯-137。 physics energy amount unit science 与AI对话词汇游戏阅读练习