永恒的挣扎存在于善与恶的力量之间。

The eternal struggle is between the ___forces of good and evil.

在每个人心中，怀疑的力量常常与理性的力量发生冲突。

In every individual, the ___forces of doubt often conflict with the forces of reason.

她的魅力使她在政治圈中成为一股力量。

Her charisma makes her a ___force in political circles.