Conductors like metals and salt water tend to have loosely bound outer electrons, which can easily flow between molecules.

金属和盐水等导体往往具有松散结合的外层电子，这些电子很容易在分子之间流动。

The metal door knob's loosely bound electrons hop to your hand to replace the electrons your body has lost.

金属门把手松散结合的电子会跳到您的手上，以替换您身体丢失的电子。

On the other hand, insulators like plastics, rubber and glass have tightly bound electrons that won't readily jump to other atoms.

另一方面， 塑料、橡胶和玻璃等绝缘体具有紧密结合的电子，不会轻易跳到其他原子。

But electrons are tiny and almost insignificant in mass, and rubbing or friction can give loosely bound electrons enough energy to leave their atoms and attach to others, migrating between different surfaces.

但电子很小， 质量几乎微不足道，摩擦或摩擦可以为松散结合的电子提供足够的能量，使其离开原子并附着在其他原子上，在不同表面之间迁移。