为揭示那类效当，博家设念了一个典型实验，给参加那个实验的参取者一份大礼物。
A typical experiment designed to reveal the effect would give participants a small gift for participating in the experiment.
当人们开始意识到地球上没有足够的石油时，他们要求汽车制造商生产能效更高、污染更少的汽车。
When people began to realise that there was not enough oil on the earth, they asked car makers to produce more efficient and less polluting cars.
就眼前来说，虽然酒精能够舒缓人的心情，使人镇静入睡，但是当酒效一过，镇静的作用就会消失，导致你从睡眠中过早地醒来。
Though alcohol is a depressant that will help you fall asleep in the short term, once its effects wear off, it can cause you to wake up prematurely.
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