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。