此言为不善之有罚,为善之有赏。
就是说做不善的事情要受到惩罚,做善事会得到奖赏。
The principles of conditioning apply equally to all species.
最多人的最大幸福是衡量对与错的标准。
The discovery of stars orbiting the supermassive black hole at the galactic center was a turning point in astrophysics.