发生的事情不过是，无条件刺激与条件刺激，铃声与食物，因为恰巧同时出现而联系在了一起。
So, what happens is the UCS and the CS, the bell and the food, go together because they happen at the same time.
由于人们的相互联系空前密切，我们也必须认识到这些新技术并非无条件地造福人类。
Because amid this unprecedented surge in connectivity, we must also recognize that these technologies are not an unmitigated blessing.
由于人们的相互联系空前密切，我们也必须认识到这些新技术并非无条件地造福人类。
Because amid this unprecedented surge in connectivity, we must also recognize that these technologies are not an unmitigated blessing.
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