医疗机器人有很大的潜力，但是许多提出的器件尤其是那些包括生物有机体的器件，可能很多年都无法实际应用。

Medical robots have much potential, but many of the proposed devices, especially those that incorporate biological organisms, may not be practical for many years.

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生物性危险：指食品中不应该出现任何意外的生物有机体或人为添加的生物有机体，不能危害人类的健康。

Biological risk: refers to the food should not occur in any unexpected organism or add artificial biological organisms, can not harm human health.

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有一个巧妙的方法来纯化dna，用一种酶能够辨别和摧毁微生物有机体的遗传物质而不会销毁太多相关的DNA。

Purifying it involved a clever trick using enzymes that can identify and destroy the genetic material of micro-organisms without also destroying too much of the DNA of interest.

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