strontium
noun [ U ] uk/ˈstrɒn.ti.əm/ us/ˈstrɑːn.ʃi.əm/ (symbol Sr)
锶（一种银白色的软金属化学元素，容易燃烧，发出明亮的红色火焰，用于生产焰火和某些彩色电视）
a chemical element that is a soft, silver-white metal that burns easily with a bright red flame, used in fireworks and some televisions