名詞 insulator:

1. a material such as glass or porcelain with negligible electrical or thermal conductivity
   同義詞：dielectric, nonconductor

1. Conductors let electricity through, but insulators don't let through.
   導(dǎo)體讓電流通過，而絕緣體則不讓通過。

in.su.la.tor

n.（名詞）
A material that insulates, especially a nonconductor of sound, heat, or electricity.
絕緣體：絕緣材料，特別是聲、熱、電的非導(dǎo)體
A device that insulates.
絕緣裝置