The strength of a response tendency depends on the amount of reinforcement received.
我们仍然是我们命运的主人,我们仍然是我们灵魂的主宰。
摆脱诱惑的唯一方法就是屈服于它。
可持续林业不仅仅是砍伐树木;它关乎我们星球的未来。
Music is the moonlight in the gloomy night of life.