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Watch a dramatic scene unfold as a tiger pursues a deer in a natural, open field habitat, showcasing the predator-prey dynamic in the wild.

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A moment of raw emotion from President Joe Biden as he speaks about a personal issue during a public address.

了解吴三桂的生平和背叛明朝投奔清朝的决定，及其对中国历史进程的深远影响。