即使在医学上，一个随机试验仅能证明普通对患者奏效，而不能证明个别患者会得益。

Even in medicine, a randomised trial can only show whether the average patient benefits; not whether any individual patient will benefit.

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尽管有个别公司在研究动力膝关节和动力踝关节，但都没将两者结合起来，也没有想到通过患者的神经信号来控制假肢关节。

Although a few companies are developing powered knees and ankles, no company makes a lower leg prosthetic with both. And none are controlled by the amputee's nerve signals.

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在个别严重的病例，患者根本不能进食和饮水，只能通过胃管或者静脉给与营养和水分，他说。

In the most severe form, they cannot eat or drink at all and must receive nutrition and fluid replacement through tubes into the stomach or intravenously, "he said."

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