/ɪˈnɜ:t ||; ɪnˈɝt/adj1 not able to move or act 无活动力的
2 (used about chemical elements 指化学元素) that do not react with other chemicals 惰性的；不活泼的
Inert gases are also called noble gases. Helium, argon, krypton and neon are inert gases. 惰性气体(inert gas)也称noble gas。氦(helium)、氩(argon)、氪(krypton)和氖(neon)都是惰性气体。