noun🔗Share铈 (shì) A chemical element (symbol Ce) with an atomic number of 58, a very soft, ductile, silvery-white metal that tarnishes when exposed to air."The chemist carefully handled the small sample of cerium, noting its silvery-white color before it began to tarnish in the air. "这位化学家小心地处理着这小份铈样品，注意到它银白色的光泽，然后它就开始在空气中失去光泽了。elementmaterialsubstancechemistryscienceChat with AIVocabulary GamePractice Reading
