We really hope that this showcase inspires you on doing the best you can to read happiness rather than sorrow on the faces of the children of planet Earth.

我们确实希望这一展示能激发你全力以赴读懂地球孩子脸蛋上呈现的幸福，而非悲伤。

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Despite the speed with which faces move, we can read whether or not smiles reflect real positive emotions.

尽管表情变化的速度很快，我们还是可以读出微笑是否反映了真正积极的情绪。

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So our brains evolved to be incredibly masterful people-readers -- we can instantly, and quite accurately, read emotions in others' faces and body language, and respond accordingly.

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