... Closed Circuit闭合电路 Electrical Conductors and Insulators电的导体和绝缘体 Electric Current电流 ...
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Electrical insulators are commonly used to hold conductors in place, separating them from one another and from surrounding structures.
电绝缘体可用来使导体的位置固定；使导体彼此隔开并同周围的构筑物隔开。
After all, insulators are the very opposite of conductors: their electrons are tightly bound to atoms and the material resists the flow of electrical current.
绝缘体和导体向来都站在对立面，绝缘体中的电子被紧紧束缚在原子上，因此没有电流能够通过。
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