Inside atoms, you will find particles such as protons, which have a positive electrical charge, and electrons, which usually have a negative charge.

而在原子内部，你会发现一些更小的粒子，如质子和电子，质子带有正电荷，电子则带有负电荷。

Every atom is made from three kinds of elementary particles: protons, which have a positive electrical charge; electrons, which have a negative electrical charge; and neutrons, which have no charge.

带正电荷的质子，带负电荷的电子，以及不带电荷的中子。