Sensors and circuits were on the brink of failing and NASA experts realised that they had to do something or lose contact with their probe forever.
传感器和电路濒临故障，NASA 的专家们意识到他们必须做点什么，否则将永远与探测器失去联系。
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At one stage the probe lost contact with Earth for seven weeks, a glitch that added three years to its space voyage.
有一段时间探测器与地球中断联系了好几周，另一个故障则导致了它的空间探测旅程增加了三年时间。
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The shaft drilled for the probe that made contact can be used to send them food, clean water and medicine. But rescue workers still have to decide how to bring back them to the surface.