To get around this problem, Poon's team designed the plate to emit electromagnetic radiation in a directed beam towards the implant.

为了解决这个问题，Poon和他的团队设计了这种金属薄片，能够直接向移植物发射一束电磁辐射。

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During tests over several days, the pointer or tracker tracked an IR source and directed a laser beam at that source.

在几天的测试中，指示器或跟踪器跟踪一个红外光源，并引导激光束击中目标。

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They exposed the creatures to a beam of directed blue light, as might come from certain bioluminescent predators, as well as to other stimuli such as passing shadows.

他们揭露了生物的蓝色光束，可能来源于某个会发光的食肉动物也可能是受到其他的刺激，如通过的阴影。

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The computer-operated system also allowed street lighting to be increased when needed and reduced when not, and the lights directed their beam downwards cutting light pollution, he added.

BBC: Surrey County Council replaces 15,000 street lights

With this, the scanning beam is not directed at any single spot, but moves around, so the plastic does not burn.

ECONOMIST: Recycling

The result is a beam that can be directed accurately at features of interest.

ECONOMIST: Taking the heat out of gynaecological examinations