Failures hardware failure (note that faulty hardware is rare).

故障硬件故障(请注意，错误的硬件极少)。

youdao

France Info radio quoted an airport authority source as saying that its absence from the radar could be a question of a transmitter failure, but that this would be a very rare occurrence.

法国资讯电台援引一名机场管理局消息人士的话说，飞机从雷达上消失可能是发射失败的问题，但是这种现象是非常罕见的。

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For the very rare case when both adapters fail we would need to have two additional standby adapters to cover all potential single point of failure cases.

对于两个适配器同时发生故障的罕有情况，我们将需要两个额外的备用适配器，来处理所有潜在的单点故障。

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He died June nineteenth from kidney failure and a rare and painful skin disorder.

VOA: special.2010.07.05

Power cuts are common in Pakistan, but a nationwide failure is rare.

BBC: Pakistan orders inquiry into nationwide power cut

For Rivera, it was a rare moment of failure.

WSJ: Rivera thanks Indians employees for memories

But Vioxx caused an increased risk of congestive heart failure, and Bextra led to rare skin reactions.

FORBES: Magazine Article