In a recent mimicking study at the University of Clermont-Ferrand in France, subjects were asked to determine whether a smile was real or fake while holding a pencil in their mouth to repress smiling muscles.
法國克萊蒙費朗大學近期的一項模擬研究要求研究對象通過微笑肌肉把一支鉛筆含在嘴上,以此判斷微笑的真假。
Without the pencil, subjects were excellent judges, but with the pencil in their mouth -- when they could not mimic the smile they saw -- their judgment was impaired.
在不含鉛筆的情況下,研究對象都能夠輕松做出判斷,但當他們含著鉛筆時,他們無法模仿眼前的微笑,也就無法正確判斷。

In addition to theorizing on evolution in "The Origin of Species," Charles Darwin also wrote the facial feedback response theory.
除了在《物種起源》中提出進化論,查爾斯· 達爾文還提出了面部反饋理論。
His theory states that the act of smiling itself actually makes us feel better, rather than smiling being merely a result of feeling good.
這里理論提到微笑這一行為實際上能讓我們的心情變得更好--而不僅僅是心情好的產(chǎn)物。
In his study, Darwin actually cited a French neurologist, Guillaume Duchenne, who sent electric jolts to facial muscles to induce and stimulate smiles.
在他的研究中,達爾文援引了法國神經(jīng)學家Guillaume Duchenne的研究,他通過給面部肌肉做電顫刺激來產(chǎn)生微笑。
Please, don't try this at home.
請不要在家里模仿。