From the comedy, we get not only laughter, contemplation and inspiration as well;

从喜剧中，我们不仅得到欢笑，还有沉思和 启迪；

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Scientists also found that the only real and relaxing laughter works not just polite laughter.

科学家们还发现，真正放松的笑声不仅仅是礼貌的笑声。

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Laughter not only makes you feel good, but it helps boost your immune system too.

大笑不仅可以使你感觉良好，还能加强你的免疫系统。

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One says, "This is not funny, " only to be drowned out by the laughter of the main speaker and those supporting him.

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This is a tension which, apart from occasional spasms such as 19th-century British abolitionism (which, interestingly, did not prevent Britain from supporting the Confederacy to keep the cotton flowing to the mills of Lancashire), not only is absent from other nations, but elicits cynical laughter from them.

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Speaking of 'tween heartthrobs, Scott Brown is here. (Applause.) I admire Scott -- a rare politician in Washington with nothing to hide. (Laughter.) Now, you should be aware that Scott Brown is not the only one with a salacious photo spread floating around.

WHITEHOUSE: President Obama and Jay Leno at White House Correspondents Dinner | The White House