The probability of a response is determined by its reinforcement history.
The Internet is a place where people can connect, share, and learn.
想要让人群或醉汉安静下来的话,只需要小点声说话就行。
我越成功,就越需要一个不会被吓倒的男人。
要使婚姻长久,就需克服自我中心意识。
世界上充满了显而易见的事物,却没有人注意到它们。