* @param arr 待排序数组
sciencealert.com
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Full training can take a long time, so although some resident doctors may have only recently finished medical school, others could have more than a decade of practical experience and be responsible for most aspects of care.
The report comes amid a battle between the US and China for supremacy over AI. At stake is how the technology is used on the battlefield and in the boardroom of the world’s two biggest economies.
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