Don't worry, be happy and, according to new research, you will also be healthy.

根据新的研究结果显示，如果你心情愉快、无忧无虑，你就会身体健康。

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Don't worry, be happy! Don't worry, be happy now!

不要担心，快乐些，不要担心，现在就快乐吧！

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After eight "don't worry, be happy" Bill Clinton years and eight "we kill them" George W. Bush years, the world is elated to see someone with honesty and integrity in the White House.

经过八年“别担心，高兴点”的克林顿时代和八年“干掉他们”的乔治·布什时代，这个世界很高兴看到有个诚实正直的人入主白宫。

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