neon
noun [ U ] uk/ˈniː.ɒn/ us/ˈniː.ɑːn/ (symbol Ne)
氖，氖气
a chemical element that is a gas with no smell or colour, does not react with other chemicals, and shines red when an electric current goes through it
a neon light/sign 霓虹灯／霓虹灯广告牌