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You know how sometimes things that happen in the real world can affect your dreams?
你知道現實生活發生的事情是怎么影響你的夢境嗎？
Like you might think fleetingly of someone and then have that person pop up in a dream. Or a noise like an alarm clock sounding figures in a dream narrative.
比如說，你可能會覺得有人一閃而過，又突然在夢里出現。或者你感覺在夢中的故事情節里一直回蕩著像鬧鈴似的噪音。
Now, dream researchers in Germany have found that odors, too, can affect dreams. Nice smells, like roses, tend to result in happier dreams, while repugnant scents like rotten eggs more often result in bad dreams.
現今，德國的釋夢研究者者發現臭味也能影響夢境。香味，比如說玫瑰花香，有利于引發快樂的夢，然而像壞雞蛋這樣的刺鼻的味道更容易引發消極的夢。
The researchers studied several young women in their twenties, a group known to have the best sense of smell.
研究者以20幾歲的年輕女孩為對象做了實驗，她們被公認為有著非常靈敏的嗅覺。
While sleeping, the women breathed in air through tubes taped to their nostrils.
在她們睡覺的時候用氣管插在鼻孔呼吸。
During REM sleep, when most dreams occur, the subjects received rose-scented air, then rotten egg-scented air, and then plain air.
夢境經常發生在快速眼動睡眠階段，在這個時候讓研究對象聞玫瑰香味，然后是臭雞蛋味，最后讓她們正常呼吸。
When awakened a few minutes after the infusion of rose air, nearly all of the women reported having pleasant dreams.
在吸入玫瑰香味之后幾分鐘把她們叫醒，幾乎每個人都說做了很美好的夢。
When awakened after receiving the foul-smelling air, most women reported having dreams with a negative cast.
在吸入臭味之后醒來時，大多數都說做了很消極的夢。
To be clear, none of the women reported actually smelling roses or rotten eggs in their dreams.
首先說明一下，沒有人說她們在做夢的時候聞到了玫瑰香或者臭雞蛋味。
The researchers believe that smells influence dreams indirectly by altering the dreamer's emotions.
研究者相信，這證明了味道可通過改變做夢人的情緒來間接地影響夢境。
After all, smell is governed largely by the brain's limbic system, which also controls emotion and behavior.
畢竟，味覺是由大腦邊緣系統支配的，并且大腦邊緣系統也同時控制著人的情緒和行為。
The researchers reason that if smell can influence our emotions when we're awake, it could just as easily affect emotions while we're asleep and in the throes of a dream.
研究者推理，如果味道可以在人們清醒時影響情緒，那么它也可以在人們睡著或者做夢時輕易地影響人們的情緒。
