An insulator is a material or an object that does not let electricity, heat, or sound pass through it easily. The plastic around a wire is an insulator: that is why you can touch the outside and not get a shock.

An insulator is a material or an objectinsulator是一種材料或物體 that does not let electricity, heat, or sound pass through it easily不太會讓電、熱，或聲音輕易通過 The plastic around a wire is an insulator電線外面包的塑膠就是一種insulator that is why you can touch the outside and not get a shock這也是為什麼你可以摸電線外面而不會觸電

Rubber, glass, dry wood, and many plastics are common electrical insulators. Wool, foam, and still air are insulators against heat; thick curtains or foam panels can work as insulators against sound.

Rubber, glass, dry wood, and many plastics橡膠、玻璃、乾木頭，還有很多塑膠 are common electrical insulators都是常見的電絕緣體 Wool, foam, and still air are insulators against heat羊毛、泡棉，還有靜止的空氣是隔熱的insulator thick curtains or foam panels can work as insulators against sound厚窗簾或泡棉板則可以當隔音的insulator

In school science the pair you learn is conductor (lets electricity through) and insulator (does not).

In school science the pair you learn is在學校自然課裡，你學到的一對是 conductor (lets electricity through)conductor（導體，讓電通過） and insulator (does not)和insulator（絕緣體，不讓電通過）

Though actually, nothing is a perfect stop. An insulator just resists the flow very strongly.

Though actually, nothing is a perfect stop不過實際上，沒有東西能完全擋住 An insulator just resists the flow very stronglyinsulator只是非常強力地抵抗那股流動

People also use insulator for the object itself — the ceramic cup on a power line, for example — not only for the kind of material.

People also use insulator for the object itself大家也會用insulator來指那個物體本身 — the ceramic cup on a power line, for example ———比如電線桿上的那個陶瓷杯—— not only for the kind of material而不是只指那種材料