insulator
UK/'insjuleitә/US
六级A1
释义
n.
A material or device that does not let heat, electricity, or sound pass through it
绝缘体；隔热体（与导体相对）
词根拆分
词根派生insulate + -or（施动者/工具）= 起绝缘作用的东西。玻璃、橡胶、干燥空气都是 insulator——它们不让热或电通过。与导体（conductor）相对。
词根 insul 还连着 7 个词例句
- 1.
Rubber is an excellent insulator, which is why gloves protect electricians.
橡胶是极好的绝缘体，所以手套能保护电工。
- 2.
Air trapped in the feathers acts as a natural insulator against the cold.
羽毛间封住的空气是天然的隔热层，能御寒。